2003 Pontiac Grand Am GT
Car was put on computer at advance and showed multiple misfire??? What can that mean?? A slight tap from rocker arm on upper engine. I was told it could be my wires, plugs, or a rocker arm, if anybody can let me know what it can be. If any questions please let me know @2515812311...
Well my girls grand prix had the same diagnosis , but her head gasket was leaking also .. so I when ahead and took everything apart got to the heads cleaned them up well . and noticed small cracks where the spark plugs enter. That's the worst possibility . Yes it could easily be as simple as spark plugs or wires causing the computer to cause a multiple misfire. the slight tap maybe try oil change first.
Go to GAOwnersClub.com and ask there.
My car just did the same thing....the rocker arm broke off the push rod for cylinder 6.
Okay, what did you do to your car??? Did you fix it or did you replace the engine???
I had it fixed....it cost about 600$...i actually get it back tomorrow.
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