What causes a distributor to fail on a GM Truck?
The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open. My distributer failed at 195,000 miles. New dist, plus wires coil, cap and rotor, runs like it is new.
What are the symptoms of a bad fuel pressure regulator?
Another symptom of an issue with the vehicle’s fuel pressure regulator is fuel leaks. If the fuel pressure regulator’s diaphragm, or any of the seals fail, fuel leaks can occur.
Where is the pressure regulator on a fuel pump?
While some fuel pressure regulators are built into the fuel pump assembly, most fuel pressure regulators are mounted in the fuel rail and can be serviced independently of the rest of the system.
What kind of CSFI does GM suburban have?
Even though this is a case study of a 1997 CSFI ‘Spider’ equipped GM Suburban (with almost 200,000 miles), the core testing tips of this article will help you whether you have a 4.3L with CSFI or CPI ‘Spider’ or a V8 with CSFI ‘Spider’ (no matter what the year of the vehicle), if indeed this is the problem you’re having with your vehicle.
The symptoms are very noticeable, too. You may notice a very rough idle, rough acceleration, slow acceleration, and vibrations from the engine. There are also many causes of engine misfires. It can be a problem in the spark plug or the ignition coil.
What kind of fuel injector does a 4.3L engine use?
This system used on all 4.3L, 5.0L, and 5.7L engines from 1996 to present. This ‘Spider’ assembly has either 6 or 8 individual fuel injectors that feed 6 or 8 nylon fuel lines. The CSFI system does use a MAF sensor.
What causes a fuel injector to go bad?
Right off the bat, I’ll tell you that the most common cause of this happening is usually the PCM (Powertrain Control Module = Fuel Injection Computer) going bad. What Vehicles Can I Apply This Info To?
How does the distributor rotor and cap work?
The distributor rotor and cap keep the distributor’s contents separate from the engine and keep the distributor’s working parts clean and tidy – while supporting the incredibly high volts of energy and delivering them to the appropriate spark plugs. The spark plugs utilize the spark from the distributor to ignite the fuel mixture,…
Can a broken distributor cap cause a failure?
Unless it is cracked, has water inside, or bad contacts… there isn’t much to fail on a cap. The electronic ignition controls the actual “timing”. Not like the old days where a mechanical adjustment changed the timing (points/condensers). 0300… What does that mean?
How old are the plugs on a GM Truck?
The plugs cap rotor and wires are all 3 months old. I used autolite 605’s for the plugs Ac Delco for the cap and rotor, and a good quality set of wires. we put the spark tester on the wires and we are getting spark, truck just acts just like its out of time.
The distributor rotor and cap keep the distributor’s contents separate from the engine and keep the distributor’s working parts clean and tidy – while supporting the incredibly high volts of energy and delivering them to the appropriate spark plugs. The spark plugs utilize the spark from the distributor to ignite the fuel mixture,…
What happens when the distributor cap is not on?
Car doesn’t start. When the distributor cap isn’t on tightly or is malfunctioning, the engine is unable to send the spark through the entire circuit required to move the cylinders – which ultimately make the car run.
How does a running engine affect the distributor?
A running engine sends a large amount of electricity through the ignition coils to the rotor, which turns inside the distributor. The rotor routes the energy in a specific through the spark plug wires ultimately to the engine’s cylinders in the correct firing order.
Can a bad distributor rotor cause an engine misfire?
Engine misfires can occur for a number of reasons. Checking your distributor rotor and cap to see if they need to be replaced is one way to ensure that everything is in solid working order.