What does it mean when there is no injector pulse?

In case of that, there is no injector pulse or spark, this means that is your ECU has failed in operating in this case you have to get your ECU changed or visit an expert. You May Like: Low Fuel Light Comes on When Tank Is Full Causes and How to solve it Question: What controls the fuel injector pulse?

What’s the difference between the 88 and 92 injectors?

The Throttle bodies look the same, the injectors may have some internal difference, perhaps the 92 has higher fuel pressure, the 88 only has 9 to 13 lb fuel pressure. I’m on my way to get the noid light now, its noon here.

Do you need Noid light for fuel injector?

All fuel injection and ignition functions are regulated by the computer control module, which is sometimes also referred to as the ECM, PCM or VCM. First of all you need a noid light to check for a pulse. A voltmeter will not work, neither will a 12 volt test light.

How does the engine control unit control the injector pulse?

Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line

What causes no power to fuel injectors?

The most important signals that determine the accuracy of a signal coming out of ECU to injectors are crankshaft position sensor and camshaft position sensor, so to test a bad injector, you have to check the voltage on the injector when the ignition key is turned on: NO VOLTAGE? , so what causes no power to fuel injectors?

How do you test a fuel injector ( ANS )?

Ans: By using a simple diagnostic tool called NOID light, this tool detects a digital signal coming from the ECU and flashes an LED light, so if there is no LED flashing during cranking, this means that there are no pulses coming out of the ECU. Question: How do you test a fuel injector?

How to check fuel injector pulse using a Noid light?

This is a awesome test because it can be done very fast using a very inexpensive tool called a Noid light. This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over. Most of the time this test is done when the engine is cranking over but not starting.

When do you test the fuel injector pulse?

This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over. Most of the time this test is done when the engine is cranking over but not starting .

Which is the worst pulse injector service company?

THE MOST FRAUDULENT COMPANY I HAVE EVER DEALT WITH. Don’t ever be tempted to go to this place it will end in blood tears ! Pulse injectors never again..!! Worse service ever, Scammers.

Is there a service exchange for pulse injectors?

Pulse injectors never again..!! Worse service ever, Scammers. My d4d had one injector with a electrical problem that burned the injecto drive, they said they do service exchange so I paid them R7600 after sending them my old injectors.

THE MOST FRAUDULENT COMPANY I HAVE EVER DEALT WITH. Don’t ever be tempted to go to this place it will end in blood tears ! Pulse injectors never again..!! Worse service ever, Scammers.

How can I test the resistance of my injector?

Another way to test the injector is to measure the resistance of every injector between the two terminals and compare it with the highest and lowest values stated in the injector datasheet; if the result outside the allowable boundaries, then change this injector.

When do fuel injectors and spark plugs work?

The ignition spark occurs just before top-dead-center of the compression stroke so there is no overlap between injection and ignition functions. Fuel injectors and spark plugs do not work at the same time.

Why is my injector pulse not working on my car?

Ans: Having a stuck or clogged injector is a very wide known problem that happens because of the accumulation of carbon build-ups that coming out from using a low-grade fuel, so regularly using a fuel system cleaner can help you in this mission.

Can a fuel injector cause too much idle?

The most common fuel system problems that can cause idle issues are a malfunctioning fuel pressure regulator or dirty or leaking fuel injectors. Either one of these can cause too much fuel to enter the intake, thus affecting the idle. An easy check for a fuel pressure regulator is to just remove the vacuum line going to it.

What to look for when your fuel injector is leaking?

Another thing to look for is a wet spark plug. If you remove a spark plug and it’s wet with fuel, this could indicate a leaking fuel injector. If you see fuel on all spark plugs, this could indicate another problem; most likely, your engine is flooded.

How to know if your engine has no spark?

First Confirm Your Engine Has No Spark. 1 Disable the fuel system by removing the fuel pump fuse or relay. 2 Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine. 3 Finally, Have someone crank the engine and watch for spark.

What kind of fuel does a spark ignition engine use?

We have seen two types of fuel system, fuel injection system in diesel engine and petrol or octane run the engine. We have a focus on the Spark Ignition engine (SI Engine), which is run by Octane or Petrol. What is Fuel Injector?

Is there an injector pulse on my car?

SOLVED: I have no injector pulse. I have plenty of fuel – Fixya I have no injector pulse. I have plenty of fuel pressure and both crank sensors and the cam sensor are good. If I spray carb spray through a vacuum hose, it runs fine, but I’m getting nothing through the injectors.

Why does my carb spray have no injector pulse?

I have no injector pulse. I have plenty of fuel pressure and both crank sensors and the cam sensor are good. If I spray carb spray through a vacuum hose, it runs fine, but I’m getting nothing through the injectors. What else besides the PCM would control the injectors other than the cam and crank sensors?

How to check fuel injector pulse during priming?

What you need to do is check ground on one side and hot on the other with an ohm setting on your meter. One side should come back OL (ground side) and the other should come back .0001 Ohm (hot side) Then grab a noid light and check for injector pulse during priming.

Why does fuel injector not close when ECU fires?

chances are, your injectors are dirty and not compleatly sealing when the injector closes, thus flooding your cylinders by not compleatly stoping the fuel flow into the cylinders. you are suppose to have hot at both wires on the injector untill the ecu fires.

Is there no power to the fuel pump?

No power to the fuel pump and the fuel relay is not getti… Q: No power to the fuel pump and the fuel relay is not getting power. My car has 190000 miles.

Why is the fuel pump and relay not working?

The ignition circuit, which includes the ignition switch, controls power to many components, including the fuel pump and relay. If there is an issue with the switch or the circuit, perhaps a wiring problem, then power to the fuel system may be cut off.

No power to the fuel pump and the fuel relay is not getti… Q: No power to the fuel pump and the fuel relay is not getting power. My car has 190000 miles.

Are there any Honda Civics that don’t start?

2001 Honda Civic Cranks but no startwas created by wlester So i have a 2001 Honda Civic EX 1.7 L Automatic with 167,000 miles, was running fine parked in the driveway came out the next morning Crank but no start. Here is what I’ve done to this point: Checked timing belt All is good Checked for fuel pump prime and you can hear the pump.

Is the Honda Civic EX 1.7 L automatic running?

So i have a 2001 Honda Civic EX 1.7 L Automatic with 167,000 miles, was running fine parked in the driveway came out the next morning Crank but no start. Here is what I’ve done to this point: Checked timing belt All is good Checked for fuel pump prime and you can hear the pump.

What causes no power to fuel injector pulse?

Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line Question: What causes no power to fuel injectors?

Is there a problem with my Honda Accord?

No sputter no nothing. It cranks and cranks but would not and will not start. Had the car towed home and the next day I replaced the fuel pump because I couldn’t hear it making that whirling noise, so I thought for sure that was the problem. Well, it wasn’t I guess. It still cranks like it wants to start, but will not.

What kind of Honda Accord has no communication?

This is a 2000 Honda Accord 2.3 Vtech that cranks, doesn’t start and has no communication. It has over 230k miles on it. Check the main power relay before chasing powers & grounds for hours. Also shown are the ECU pinout guide and the diagram for the main power relay. Loading…

Why does Hyundai Tucson gls-2.0 intermittent no start?

It was an auction purchase and brought in by the purchasing dealer for intermittent stalling and not restarting. When the problem was present, the engine would crank but not start. The symptom was very erratic and may not occur for days at a time. Looks like this one needed some patience.

Is there a test light for fuel injector pulse?

My name is ***** ***** I’ll be assisting you with your question. How did you check for spark? I bet if you connected a test light to a fuel injector wiring connector while trying to start, you would find that you have no fuel injector pulse either.

Where is the injector pulse on an ECM?

Okay ecm fires injectors with ground…should have a set of ground wires at thermostat..and one on intake behind where ac pump is or should be. Make sure clean and connected tight.

What controls fuel injectors?

The Engine Control Unit (ECU) controls the fuel injector. The longer the fuel injector nozzle is opened, the more fuel is delivered to the engine.

What are the different types of fuel injection?

Over time, the point of injection has moved closer and closer to the cylinders themselves. The three major types of fuel injection are known as throttle body injection, multiport injection, and direct injection.

What is fuel injector voltage?

The vast majority of fuel injectors are ground controlled. This means that of the two wires going to the injector one is held at steady 12 – 14 volts while the other lead is pulsed to ground by the ECM. This type of injector circuit is called negative trigger.

What is engine injector?

An injector is a device for introducing fuel under pressure into the combustion system of an engine. The vibration of the four-cylinder engine cracked a fuel injector pipe. Larger injectors increased fuel flow to the 2.4-liter turbocharged engine.

Why is my fuel injector # 2 cylinder not getting fuel?

No Pulse I hooked a stethoscope to the injector #2 and it has no pulse. All the injectors are ticking perfectly fine. I switched injectors to stock and have 8 set of these injectors and no matter which injector I use, the #2 cylinder isnt getting fuel. The engine studders and has terrible rough idle at like 550rpm.

What are the input signals in a pulse injector?

These are the Ne, G, and IGf signals. Inside the ECU, the Ne Signal is used to produce an injection chive signal. The G signal is used to determine the timing of the injection signals. The IGf signal is monitored for fuel delivery fail-safe. (With Conventional EFI, the IG signal is used to produce the injection drive signal.)

How to solve ” I have no injector pulse “?

An expert that got 5 achievements. Re: I have no injector pulse. I have plenty of fuel… There is an injector fuse. Pull an injector plug , 1 wire should have 12 volts to it. the other goes to the PCM. The PCM is set up so that it has individual injector drivers, Meaning that you could loose 1 or 2, but loosing all 6 at one time is very unlikely.

What causes no fuel injector pulses in the ignition module?

No fuel injector pulses from any of the fuel injectors. This is usually caused by a bad crank sensor or a bad module. Your starting point is TEST 1. You have spark from all of the spark plug wires.

Is there a problem with the number 2 injector?

Now, since it’s only the number 2 injector, it shouldn’t be the injector driver in the ecu. Look at wiring diagrams again and trace the injectors back to the ecu, checking for voltage just like you did before. Most likely you have an open somewhere. found the problem, the wire from the #2 harness to like where the CAS looked a little brittle.

What to do if your Jaguar XJ6 won’t start?

If your XJ6 or XJ12 won’t start, grab your voltmeter and follow this checklist. Covers checking spark plugs, coil, wires and distributor cap, ballast resistor, amplifier and distributor pick-up, fuel supply, fuel pump and relay, air flow meter, fuel injectors and ECU.

How to diagnose rich running on Jaguar XJ6?

Diagnosing rich running on the fuel injected 4.2L engine, covers checking of the coolant temperature sensor, fuel pressure regulator, oxygen sensor, fuel injectors, cold start circuit, fuel changeover system, air flow meter (AFM), and ECU. This information pertains to the Jaguar XJ6 Series II-III models with the fuel injected 4.2 engine.

What causes rich fuel mixture on EFI XJ6?

The coolant temp sensor is a common culprit. The main purpose of this sensor is to “tell” the ECU that the engine is cold so that a richer mixture, required with a cold motor, will be provided. In this sense it is similar in intent to an automatic choke on a carbureted engine.

Why do my injectors stop firing during crank?

Injectors will fire during crank and 1-2 secs later will stop after most of these situations, excluding a security problem, they wont fire at all, but may show pulse on the scanner. If you have a fueling tune problem or other, then your injectors will still show to be pulsing… so post a log.

What happens if there is no injection signal?

The ECU cannot pulse the injector without an Ne signal and will not start or run if this signal is not present. If the G signal is not present while cranking the engine, the ECU will not be able to identify when to produce the injection signal. The result will be the same, no injection pulse.

What should I do if my Ford fuel injector fails?

Fuel Injector Inspection – You can take the injectors out of your Ford and inspect them for damage, dirt or rust. You can start by removing the fuel rails and detaching each injector from the rail. When you remove the injector, there will be fuel that spills out of the rail, so make sure you do not get it on you or the ground.

What causes a fuel injector to get clogged?

Dirty Fuel Injectors – Residual fuel additive that is not dispensed within the manifold can leave a film on the fuel injectors. It can become a crusty coating on the injectors because of the heat within the engine. This residue can clog the injectors, impeding the spray. Clogged Fuel Injectors – Many things can clog up the fuel injectors.

Can you check fuel injector pulse with multimeter?

There are many reasons why your injectors can fail. You can properly check your fuel injector pulse with a multi meter before use injector cleaner, which will help you know the condition of your injector. In this guide you’ll know how to check injector pulse with multimeter.

How can I tell if an injector is bad?

Start the engine and allow it to reach normal operating temperature.
Check the temperature with the spray bottle of water if an infrared sensor is not available. Spray water on the exhaust manifold where it attaches to the head.
Raise the rpm of the engine if the exhaust manifold runners are to close to call.

What are the signs of a dirty fuel injector?

Symptoms of dirty fuel injectors may include: hard starting. rough idle. throttle “tip-in” hesitation. pre-ignition (sometimes heard as that ‘pinging sound’) poor overall performance. decreased gas mileage.

What are the symptoms of a faulty injector?

9 Common Bad Fuel Injector Symptoms Rough Idle or Engine Stalls. Because your vehicle is not getting enough fuel or an uneven supply of fuel, the RPM while idling drops below the optimal level Engine Vibrates. A faulty fuel injector will cause the corresponding cylinder to not be able to fire. Engine Misfires. Check Engine Light Turns On. Fuel Leak. Fuel Odor. Engine Surge.

How do you check injector pulse?

you can check for injector pulse with a test light, simply put the test light between the 12v pin and the trigger wire on the injector plug and crank the engine, it will flash each time it pulses.. easy….

What are the signals for the fuel injectors?

There are three signals which are necessary to operate the fuel injectors. These are the Ne, G, and IGf signals. Inside the ECU, the Ne Signal is used to produce an injection chive signal.

Can a PCM loose all 6 injectors at once?

The PCM is set up so that it has individual injector drivers, Meaning that you could loose 1 or 2, but loosing all 6 at one time is very unlikely. Injectors do run off both crank and cam sensors, but mostly off the cam. And when the cam sensor does fail, The PCM goes into default mode, using the last stored run.

What should I do if my Mercedes Benz won’t start?

Start the car and you should be able to get around 60 psi. When the engine is running and when you turn off the engine the pressure should stay steady. Always perform this test on a cold engine. Next, make sure that the fuel injector connections are secure and not loose. Check the fuel pump and the fuel pump relay.

What to do if your ignition coil is not working?

Older ignition systems used breaker points to interrupt the circuit, while more modern systems “sense” the need for spark by means of a hall-effect switch or crankshaft position sensor. The ignition module uses the information to time spark generation. Test these components if the energized coil fails to function.

Why does my Mercedes C320 not have a crank?

I can’t start the engine, not even a crank and geatbox is stuck on P +sodt brake pedal all the time. P2030 CANmessage from control unit n15/5 (electronic srlector lever module control unit) or A80 intelligent servo module for DIRECT SELECT is missibg or faulty.

How many ohms does a Mercedes C320 have?

Tested and bang…only reads from – 0.015 to 0.432 ohms.good relay in our w203 should read anything from 70 to 80 ohms! Then i thought NO to myself its to cheap to be true.

How to test no spark no start test?

No spark from all of the Coil-On-Plug Ignition Coils. No fuel injector pulses from the fuel injector connectors as tested using a Noid Light. P0335: No Crank Sensor Signal Detected. P0336: Inconsistent Crank Sensor Signal Detected.

What does no start on crank sensor mean?

P0335: No Crank Sensor Signal Detected. P0336: Inconsistent Crank Sensor Signal Detected. The thing to remember about having a failed crank sensor, is that if you have spark or fuel injector pulses, the crank sensor is OK and not the cause of your No Start Condition.

Is there a spark from the fuel injector?

No spark from all of the Coil-On-Plug Ignition Coils. No fuel injector pulses from the fuel injector connectors as tested using a Noid Light.

Can a shorted fuel injector cause a group fire?

It is strange that one shorted fuel injector can cause all the other injectors to not fire, but this is exactly what can happen with a group fired system. “Group fire” means there is only one transistor in the computer that controls all of the injectors at the same time.

How to check for pulse on fuel injector?

First grab that multimeter. T-pin into the “power” side of the injector with the key in the run position. You should have battery voltage. If you don’t, grab a wiring diagram and follow those wires back, continually checking for power the whole way.

Why is the number 2 injector not pulsed?

If you don’t get it, the injector isn’t being pulsed. Now, since it’s only the number 2 injector, it shouldn’t be the injector driver in the ecu. Look at wiring diagrams again and trace the injectors back to the ecu, checking for voltage just like you did before. Most likely you have an open somewhere. Click to expand…

How are fuel injectors fired in a DSM ECU?

The DSM ECU uses sequential firing of the injectors most of the time, we have injector drivers for each injector. It’s not a batch fire setup except when cold starting and under acceleration enrichment. The DSM ECU uses sequential firing of the injectors most of the time, we have injector drivers for each injector.

What causes a no spark condition on a Mitsubishi?

Misfire codes that are lighting up the check engine light (CEL) on your instrument cluster. Rotten egg smell coming out of the tail-pipe. When the crankshaft position sensor goes bad on your Mitsubishi vehicle, the car will crank but NOT start. Usually this will cause a No Spark Condition on all of the cylinders. What Tools Do I Need?

How can I tell if my Mitsubishi ignition coils have gone bad?

When one or several ignition coils on your Mitsubishi (or Chrysler Sebring or Dodge Stratus) have gone BAD, you’ll know right away. Your vehicle will display one of the following symptoms: The car will run and idle rough. No power as you accelerate the car down the road. Really bad gas mileage. The vehicle will not start.

What is the crank sensor on a Mitsubishi?

The crankshaft position sensor on your Mitsubishi car is a three wire Hall Effect type sensor that can be easily tested with a multimeter. Below are the circuit descriptions that you’ll need in the tests presented in this article: Crank Signal. Crank Signal output to the PCM. Power Circuit (12 Volts). Ground Circuit (provided by PCM).

How does the injector work on a prowler?

Your injector is triggered from the ignition signal so it will not spray if you have no spark. Is your engine light on? If so, see if there are any codes in the memory.

Your injector is triggered from the ignition signal so it will not spray if you have no spark. Is your engine light on? If so, see if there are any codes in the memory.

First Confirm Your Engine Has No Spark. 1 Disable the fuel system by removing the fuel pump fuse or relay. 2 Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine. 3 Finally, Have someone crank the engine and watch for spark.

How is the speed of the injector controlled?

The injector in a basic picture is an electronically controlled valve that is supplied with pressurized fuel from the fuel pump at a certain pressure level injector can be electromagnetically opened and closed at very high speed—this speed controlled by the electronic control unit using.

The injector in a basic picture is an electronically controlled valve that is supplied with pressurized fuel from the fuel pump at a certain pressure level injector can be electromagnetically opened and closed at very high speed—this speed controlled by the electronic control unit using.

Can a multimeter be used to check fuel injector pulse?

Therefore, you can see that having a well-functioning fuel injector is vital, and there are numerous reasons why it might stop working correctly. In this article, you will be taken through the steps you should follow to check the fuel injector pulse using a multimeter before you decide to make use of an injector cleaner.

Why is the fuel injection computer not working?

In addition on some makes, like Chrysler/Dodge/Jeep, the Fuel Injection Computer will not continue to power the Fuel Pump or the Ignition System with 12 Volts after an initial ten seconds or so. What Tools Do I Need To Test The Crankshaft And Camshaft Positions Sensors?

Why does my car not start when I crank the engine?

The crankshaft position (CKP) sensor monitors the position or rotational speed of the crankshaft. If the crankshaft position sensor has failed completely, and isn’t sending a signal to the (ECU) at all, then the computer won’t send any fuel to the injectors. This will leave you unable to start the car.

How many times does a crank sensor spark?

One wire delivers power in the form of 12 Volts from the PCM. Another delivers Ground. This Ground is provided inside the PCM, too. As the engine turns, a reluctor wheel on the crankshaft activates the crank sensor into creating its On/Off voltage signal 24 times per crankshaft revolution. Activate the 8 COP coils to spark.

What causes a car to stall with no spark?

Consequently, An old or failing ignition pickup may cut out signal intermittently, which may cause the engine to stall. The engine may suddenly just shut off, almost as if the key had been turned off. Depending on the nature of the issue, sometimes the vehicle can be restarted and driven.

Consequently, An old or failing ignition pickup may cut out signal intermittently, which may cause the engine to stall. The engine may suddenly just shut off, almost as if the key had been turned off. Depending on the nature of the issue, sometimes the vehicle can be restarted and driven.

What happens if there is no gas in the injector?

If it does not spray, the problem is the injector or no fuel pressure. The injector should have around 1.3 ohms of resistance, if it is open or zero resistance, it is bad. The injector could be totally clogged as well.

What kind of spare parts do I need for an injector?

Our large range of spares includes Nozzles, Seal kits, cap nuts, injector seating washers, leak off connectors, high pressure seals, Pilot valves and more.

What happens if the fuel injector is not working?

Fuel injectors are a vital part of a complex fuel management system. Furthermore, New technology has made fuel injectors more precise than ever in dispensing fuel. If the fuel injectors are not operating properly, then other parts of the engine will be affected as well.

What kind of parts do I need for fuel injector?

EFI Hardware can supply all types of fuel injector replacement parts: Pintle Caps, O-Rings, Buffer Seals, and more.

Where can I find a unit injector catalog?

In our Unit Injector catalog, you can find the Unit Injectors and Unit pumps like: Ford Powerstroke 7.3 / Navistar HEUI / Perkins, G2.9 Injectors, Ford Powerstroke 6.0 / 4.5, Detroit Diesel Series 50 / 60, Scania – Iveco, Volvo, Bosch PLD, Bosch GE.

Why does my Nissan Altima have no spark?

I am now pushing a 2005 Altima with 2.5l because it will spin over but fails to start. No codes show on my snap-on scanner. It has no spark, the tack does not move. We changed the crank sensor, and no change. My scanner said that it should have 5 vdc on one pin of the connector and that the sensor should ohm out at 165 to 200 ohms.

Why does my Nissan club have no spark?

It has no spark, the tack does not move. We changed the crank sensor, and no change. My scanner said that it should have 5 vdc on one pin of the connector and that the sensor should ohm out at 165 to 200 ohms. When I tested the plug I had 12 vdc and the sensor reads open across all the pins. Did you rebuild the motor? did it die when driving.

Why does my fuel injector have a long pulse width?

You can observe problems with the fuel injector in a variety of ways. A fuel smell coming from the engine compartment, for example, might mean that the fuel injector is creating a pulse width that is too long. A misfiring of the engine or a decrease in power, acceleration, or speed might be symptoms of a failing fuel injector.

What happens when the fuel injector fuse is blown?

It was driving fine, and then suddenly the engine died shortly after exiting the freeway. Fuel pump seems to be fine, but the fuel injector fuse is blown and when replaced, blows again. Clicking this will make more experts see the question and we will remind you when it gets answered. You can’t post conmments that contain an email address.

What happens if you have a bad fuel injector?

In several situations, a leak in a vehicle’s fuel injector can lead the fuel/air mix to become so rich that it burns out the car’s catalytic converter in the long run. It may not be that easy to diagnose a clogged fuel injector as they are similar to bad coil, bad spark plug, or broken spark plug. Maybe one cylinder or more fails to fire.

In several situations, a leak in a vehicle’s fuel injector can lead the fuel/air mix to become so rich that it burns out the car’s catalytic converter in the long run. It may not be that easy to diagnose a clogged fuel injector as they are similar to bad coil, bad spark plug, or broken spark plug. Maybe one cylinder or more fails to fire.

It was driving fine, and then suddenly the engine died shortly after exiting the freeway. Fuel pump seems to be fine, but the fuel injector fuse is blown and when replaced, blows again. Clicking this will make more experts see the question and we will remind you when it gets answered. You can’t post conmments that contain an email address.

What causes the fuel pump to not start?

The fuel pump is running and delivering normal pressure to the engine But, with all that working your engine still will not start. So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.

Why does my fuel pump keep stalling out?

Your pump may be getting hot and once turned off, it needs to cool down before it starts to work again. This is just a possibility. Fuel pumps can be tested by measuring the flow rate of the fuel. Just don’t let anybody put a new starter into it.

What causes PCM to disable fuel injectors?

@jrt2020 , Josh, The anti-theft system (Pass Lock) failure will mimic this, as anti theft tells PCM to disable the fuel injectors.

Is there no fuel from injectors to start truck?

No fuel from injectors to start truck. When I try and start my 93 Chevy Cheyenne k3500 no fuel come out of the injectors. If I use starting fluid the truck starts and the injectors work great. Has died a couple times while driving, but mostly runs fine and then won’t start one turned off.

What to do if there is no injector pulse?

If after all this you got the same result, so it’s time to check the injectors itself if there is no injector pulse on one cylinder, by try to unplug injectors one at a time, if the engine starts when a particular injector is unplugged so that it is the defected one that needs to be replaced

What should fuel pressure be for no spray?

If it does not spray, the problem is the injector or no fuel pressure. The injector should have around 1.3 ohms of resistance, if it is open or zero resistance, it is bad. The injector could be totally clogged as well. Fuel pressure should be 9 to 13 psi.

Why does my Kia Sportage not have a ground pulse?

If the injectors have power then they are getting no ground pulse from the ecm. Since you have spark, we know that the ecm is receiving the crankshaft position sensor signal, so the ecm should also then trigger the injector pulse. If there is power at the injectors and no injector pulse then the ecm is at fault. Ask Your Own Kia Question

The fuel pump is running and delivering normal pressure to the engine But, with all that working your engine still will not start. So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.

Another way to test the injector is to measure the resistance of every injector between the two terminals and compare it with the highest and lowest values stated in the injector datasheet; if the result outside the allowable boundaries, then change this injector.

Why does my Nissan 2.4L have no spark?

The most likely cause of no spark at all of the ignition coils is usually a bad crank sensor (it’s extremely rare, bordering on the impossible, for all 4 COP coils to go bad at once).

It is strange that one shorted fuel injector can cause all the other injectors to not fire, but this is exactly what can happen with a group fired system. “Group fire” means there is only one transistor in the computer that controls all of the injectors at the same time.

Why does the test light not pulse when you crank the car?

The black / red wire also has 12 volts and when you crank the car the test light does not pulse. We did this to make sure the timing belt was not broke. Its like the ignition coil is not collapsing to send the spark energy to the spark plugs.

Why does my car have no spark from distributor?

People are highly dependent on their vehicles these days. Whether traveling to vacation, work, or school, vehicles make our lives easier and comfortable. Many times, cars’ engines fail to start. When a car engine cranks but doesn’t start, then it is highly likely that there is no spark from distributor.

How do you turn off the fuel injector?

1. Turn the ignition key to “Start,” but do not start the engine. 2. Set your multimeter to measure volts. 3. Disconnect the electrical plug from the non-pulsing fuel injector. Pull the electrical plug and wired lead away from the fuel injector to allow access to the metal tabs in the plug. 4.

No Pulse I hooked a stethoscope to the injector #2 and it has no pulse. All the injectors are ticking perfectly fine. I switched injectors to stock and have 8 set of these injectors and no matter which injector I use, the #2 cylinder isnt getting fuel. The engine studders and has terrible rough idle at like 550rpm.

Why does my Ford F150 have no injector pulse?

Turns out if the sensor goes bad and the computer thinks the throttle is wide open it shuts off the injectors. The injectors still receive power but wont pulse. It defaults to this so the engine doesn’t damage itself. The fuel pressure is good at around 45 psi I believe it was.

There are many reasons why your injectors can fail. You can properly check your fuel injector pulse with a multi meter before use injector cleaner, which will help you know the condition of your injector. In this guide you’ll know how to check injector pulse with multimeter.

Where are the fuel injectors located in a car?

Turn of your car and remove the keys. First of all you have to open the hood and find the fuel injectors. You will find the location of the fuel injectors written in your car’s manufacturing module. Fuel injectors are usually located on the intake manifold and connected to each other with a fuel rail.

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