1991 Pontiac Grand Am Repair Question
Topics covered: Spark, Spark plug wires, Engine.
Mileage: No information provided.
Mileage: No information provided.
Asked on April 12, 2012
My has a knocking sound from the motor peoople say it could be the piston and someone sayed it could be the flywheel whats your anser?
Its starts but it has a bad knocking sound cant really figure it out..
Asked by rich210Answer
Replied on April 12, 2012
Pull spark plug wires when its nocking and see if one cylinder has more of an affect on the noise than others
Replied on April 12, 2012
i dont think it has spark plug wires i no it has the 4 spark plugs on the top under the cap.
Replied on April 12, 2012
You can run the engine with spark plug wires jumped from the cover with the coils to the plugs. Disable one @ a time