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1998 Pontiac Grand Am Repair Question


Topics covered: Compression, Vacuum leak, Wiring.
Mileage: 168,000 miles.

Asked on March 17, 2012

I have a gt 3.1 v-6 that is showing a po301 reading that says a misfire in cylinder # 1.i have replaced wires,plugs,coils,ignition control module and even the fuel pressure regulator.i had a pressure checked done on the cylinders and

After it runs for awhile you can hear the misfire.But when I push down on the pedal it sounds even.
Avatar Asked by JimmyE

Answer

Replied on March 17, 2012

Your question was cut off.

Check wiring to the #1 plug. Check compression. Make sure the plug is properly seated. Check for vacuum leaks.

Tiny Answered by rivermikerat (expert)
5,495 answers provided