Swap back to stock exhaust - help with missfire
06-04-2006, 12:12 PM
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Swap back to stock exhaust - help with missfire Hi
Changed out my headers to the stock manifolds, cats and Y pipe to get my car through the local sniffer test.
Car is running great, but when I floor it (WOT) I get a bad missfire. I am not really sure if it is a missfire, bang or pop. It's quite loud. I can drive it on the highway at 100 mph and it is smooth. It is only when I am accellerating at WOT. I looked under the car for any hitting or contact and there is plenty of clearance on all the exhaust pipes.
Is it possible I could get this problem from a leaking AIR or EGR gasket? I assume an exhaust leak would make a ticking noise, but not a loud pop or engine missfire.
I did add some carbon cleaner to the fuel system because I had a fair bit of carbon deposits. Should I be looking at the plugs or ignition system first?
Any help appreciated.
Thanks JA
Changed out my headers to the stock manifolds, cats and Y pipe to get my car through the local sniffer test.
Car is running great, but when I floor it (WOT) I get a bad missfire. I am not really sure if it is a missfire, bang or pop. It's quite loud. I can drive it on the highway at 100 mph and it is smooth. It is only when I am accellerating at WOT. I looked under the car for any hitting or contact and there is plenty of clearance on all the exhaust pipes.
Is it possible I could get this problem from a leaking AIR or EGR gasket? I assume an exhaust leak would make a ticking noise, but not a loud pop or engine missfire.
I did add some carbon cleaner to the fuel system because I had a fair bit of carbon deposits. Should I be looking at the plugs or ignition system first?
Any help appreciated.
Thanks JA
Last edited by JGA; 06-04-2006 at 12:20 PM.
