Quote:
Originally Posted by Redd
Drive it without the plenum. If misfires stop at least you know its somewhere in the plenum/intake.
Smoke test are not accurate. When I had a plenum air leak, I smoke tested it 3x and water tested it 1x. Came out OK. Later found the leak happened only when it was under vacuum.
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The replacement of the exhaust with x pipe & front pipe with sport cats can makes all this strange of issues like the misfires impairing exhaust emissions on all cylinders ?
Because i putted back the oem exhaust and i still have these issues..