1989 GMC C1500 V8 Two Wheel Drive Manual
Once the engine warms up, at certain rpms and throttle positions the engine will spit, sputter, pop, and run rough. The engine seems to "clear" out once the rpms get to a range above 3-4000. This happens in every gear. However, if the throttle is easily applied and the engine is allowed to accelerate slowly, the spitting and sputtering does not occur. This issue does not happen every time the vehicle is driven, however it has been happening more lately. I have changed the spark plugs, wires, fuel filter, and added fuel conditioner. The engine idles nice and smooth and once set at the desired spped it runs nice and smooth - the condition only occurs during acceleration.
have the same problem?
Monday, January 18th, 2010 AT 9:34 AM