What causes a Chevy Silverado to run rough?

What causes a Chevy Silverado to run rough?

If an oxygen sensor goes bad, it can make your Silverado run too lean (or rich). A super lean running engine will often idle rough. Fuel Injectors. The fuel injection systems job is to atomize the fuel into fine mist.

What’s the problem with my Chevy 350 engine?

I’ve had a rough idle problem with the Chevy 350 engine in the van and haven’t been able to solve the problem for over a year now. I installed the PCV valve and started the engine and warmed it up and the problem was still there, so I started checking things over making sure all the rubber hoses fit tightly.

What happens when you blow the head gasket on a car?

Whenever the head gasket is blown, the problem is leaking coolant. Coolant either leaks past the head gasket out of the engine or past the head gasket into the cylinder and combustion chamber. If you have an external leak you will notice coolant leaking from in between your engine block and the head.

How did I get rid of rough idle on my Chevy 350?

In the process, I happened to notice the TBI’s throttle was not closing all the way, staying about an eighth inch to go to get to the stop. I pushed the throttle lever to the stop and the rough idle seemed to disappear. So I hunted around for a spring to install to pull the throttle linkage to the stop and installed it.

Why is my 7.4 Vortec rough idle leaking fuel?

Get a scanner on it and check the LTFT’s. If they’re pegged at +25 then the FP regulator is leaking. Very very common issue on the 7.4’s. If you don’t have scanner access connect a FP gauge, cycle the fuel pump a couple times and then watch the gauge for drop off.

Why is my fuel pump leaking on my 7.4?

If they’re pegged at +25 then the FP regulator is leaking. Very very common issue on the 7.4’s. If you don’t have scanner access connect a FP gauge, cycle the fuel pump a couple times and then watch the gauge for drop off.

Why is my car running rough while driving?

A plug that is damaged or installed incorrectly can result in fuel being burned at an inconsistent rate. If the damage is bad enough, you may also notice your engine running rough while driving.

How can you tell if your car has a rough idle?

While some cases are less severe than others, a rough idle is usually identifiable by a shaking and bouncing sensation in the vehicle. You may also notice odd sounds, as well as inconsistent RPM counts.

What causes a car to run lean on a hill?

If the fuel filter is not changed for a long time, eventually the particles and sediment from the gas tank will build up and clog the filter, restricting fuel flow. If the flow of fuel is restricted too much, not enough will be able to reach the fuel injectors and the car is likely to run lean.