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2002 Pontiac Grand Am Question: Need to know where piston number 1 is located.



, 3.4L V6, Lake Charles, LA, May 06, 2012, 03:01

I am doing a head gasket replacement and I nee to know where is piston number 1 is located on my car so that I can put it at TOP DEAD CENTER. Also how do I know which valves are the intake and which ones are the exhaust because I forgot to label them in the order I took them out. Someone please help!

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  • Answer #1

    Autohaus Lake Norman from Autohaus Lake Norman, May 06, 2012, 15:32

    Not sure when you posted this, but if you still need to know, #1 cylinder is the first piston on the back row (closest to the alternator). Its 1, 3, 5 across the back and 2, 4, 6 up front.

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