Question about 1993 Buick Century

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Hard to start rough idle smells really rich. I can pedal it to keep running barely.

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Check to make sure ign. coils are working.

Posted on Nov 11, 2010

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1 Answer

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328 gts 1986 very rough idle, running rich you can smell the gas from the exhaust . runs fine once the throttle is pressed


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Changed intake gaskets now car will start barely and idle really rough? rocker arms adjusted to 89 in lbs.


it sounds like you installed the wrong gaskets. this allows air to leak past the gasket causing a massive vacuume leak. It could also be the gasket is too small chocking off the air and causing the car to run rich.

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Hi have an audi a4 which has a very rough idle and if left running starts to smell, the smell is really bad if you open the drivers door the smell appears to be coming from the middle of the car also loads...


Your car is running extremely rich and the smell you are experiencing is raw fuel in the catalyst. If you keep driving this way the cat will clog and need replacing. You probably have one or more defective ignition coils, or you coil driver stage has gone bad (mounted inside the air cleaner housing)

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