Smoke coming out from bottom of car..help!
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Joined: Nov 1998
Posts: 71,094
From: Hell was full so they sent me to NJ
Where is the exhaust leak? Its possible the exhaust leak is getting worse because the cat is plugged up, and blowing out a leak is the only way the exhaust can get out of the engine.
If the exhaust leak is before the O2 sensors, its really screwing up the PCM's ability to control the A/F ratio. You need to repair problems..... not just keep driving around and making them worse.
You can check for the intake manifold oil leak by taking a clean paper towel, and reaching over the back/passenger side of the engine, where the EGR riser tube is, wiping the towel on the back of the block, and checking for a large oil stain on the paper towel. You should also see signs of oil dripping down on the bellhousing.
You mention smoke coming "out of the cats".... did you do some sort of dual-cat conversion on your 94?
If the exhaust leak is before the O2 sensors, its really screwing up the PCM's ability to control the A/F ratio. You need to repair problems..... not just keep driving around and making them worse.
You can check for the intake manifold oil leak by taking a clean paper towel, and reaching over the back/passenger side of the engine, where the EGR riser tube is, wiping the towel on the back of the block, and checking for a large oil stain on the paper towel. You should also see signs of oil dripping down on the bellhousing.
You mention smoke coming "out of the cats".... did you do some sort of dual-cat conversion on your 94?
Thread Starter
Registered User
Joined: Mar 2002
Posts: 241
From: Brooklyn, NY
Where is the exhaust leak? Its possible the exhaust leak is getting worse because the cat is plugged up, and blowing out a leak is the only way the exhaust can get out of the engine.
If the exhaust leak is before the O2 sensors, its really screwing up the PCM's ability to control the A/F ratio. You need to repair problems..... not just keep driving around and making them worse.
You can check for the intake manifold oil leak by taking a clean paper towel, and reaching over the back/passenger side of the engine, where the EGR riser tube is, wiping the towel on the back of the block, and checking for a large oil stain on the paper towel. You should also see signs of oil dripping down on the bellhousing.
You mention smoke coming "out of the cats".... did you do some sort of dual-cat conversion on your 94?
If the exhaust leak is before the O2 sensors, its really screwing up the PCM's ability to control the A/F ratio. You need to repair problems..... not just keep driving around and making them worse.
You can check for the intake manifold oil leak by taking a clean paper towel, and reaching over the back/passenger side of the engine, where the EGR riser tube is, wiping the towel on the back of the block, and checking for a large oil stain on the paper towel. You should also see signs of oil dripping down on the bellhousing.
You mention smoke coming "out of the cats".... did you do some sort of dual-cat conversion on your 94?
I meant a cat, not cats, sorry bout that. Guess i will have to place an order for some new gaskets. Thanx for all your help guys! 
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