Chevy Silverado
Ford Windstar LX
Ford Expedition Eddie Bauer

What would cause a 92 Chevy to idle rough and have gas puddle in the tailpipe?



User Avatar
Wiki User

If you have gas in the exhaust then you are running the engine too rich, and too much fuel fouls the plugs thus causing the rough idle. I suggest you look at your 02 sensor(s). They are probably fouled too. 02 sensors send a signal to the ECM as to the air to fuel mixture and the ECM then sends a signal to the injectors as too how much fuel to allow into the combustion chamber.