Question about 2001 Pontiac Aztek
Spark Plug swapping is a waste of time
You may never have a failed plug in 70 years
Now you move on to professional help
You could have failed valves,failed intake gasket
or other issues
Posted on Dec 05, 2014
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Posted on Jan 02, 2017
SOURCE: cylinder 3 misfire
Make sure you're using the recommended spark plugs. When my car did that, I had put Bosch Platinum Plus-4 plugs in and got that same problem. Turns out the plugs are too hot and cause it to fire prematurely and kick the misfire code.
Posted on Jul 24, 2008
SOURCE: 2001 Firebird 3.8 misfires
Check your alternator see if you have a drop in voltage on your tack,then it is the problem.I too was a victim of high price tune up and still had a problem with a misfire.and cover your coil pack with a piece of rubber water run of onto your power pack .Another thing is to use a silicone spray on all wires.
Posted on Jun 11, 2009
sounds like a bad injector, just connection at the injector, also check for leaks at intake, one more thing , do a compression test on that cylinder start there, good luck.
Posted on Oct 24, 2009
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