C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Engine-Oil-Smoke

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Old Dec 14, 2012 | 07:49 PM
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Default Engine-Oil-Smoke

When I drive after about ten minutes whenever I stop at a light there's smoke coming out from the passenger side of the hood. Also it smells like bad oil too.It's been happening on and off for couple of months now and has been recently happening a lot. What problems can there be to solve this problem?
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Old Dec 14, 2012 | 07:58 PM
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all depends...

what are you driving?
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Old Dec 14, 2012 | 09:46 PM
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1991 corvette
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Old Dec 14, 2012 | 11:21 PM
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These are known for oil leaks out of the rear corners of the intake base manifold.
Check your valvecover gaskets and oil pressure sending unit first.
Probably dripping on your precat
Degrease the whole thing first real good then check.
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Old Dec 14, 2012 | 11:31 PM
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Maybe open the hood and see where the smoke is coming from.
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Old Dec 15, 2012 | 03:34 AM
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It looks like its dripping on the exhaust from somewhere but can't really tell what it where it's from
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Old Dec 15, 2012 | 08:31 AM
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I'lll bet it's your valve cover gaskets! I just got mine checked out when I had the oil changed and they have a small leak. Going to get them replaced next week. Hell they are 23 years old!
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Old Dec 15, 2012 | 09:03 AM
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I vote valve cover gaskets. Do not cheap out on replacements. Get high end rubber and forget leaks.
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Old Dec 15, 2012 | 10:20 AM
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Originally Posted by 383vett
Maybe open the hood and see where the smoke is coming from.
you have more common sense than you deserve
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Old Dec 16, 2012 | 02:19 AM
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Ok I checked everything and it's my dipstick. But for this car it's discontinued. Anyone know where I can get the dipstick for this car from???
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Old Dec 16, 2012 | 02:57 AM
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Originally Posted by 383vett
Maybe open the hood and see where the smoke is coming from.
Now that's funny...mean...but funny.

It's a 21 year old engine, so pick a gasket and it's probably leaking.

Read that you found it coming from your dipstick. I'm sure that an aftermarket one won't be too hard to find. You can even try a salvage yard. They put the L98's in Corvettes and Camaro's, there were alot of those made.
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Old Dec 16, 2012 | 08:06 AM
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I remember reading a post about dipsticks and pretty sue they don't make any aftermarket ones for your year, so you will probably have to hit the salvage yards!
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Old Dec 16, 2012 | 09:45 AM
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Originally Posted by VJ818
Ok I checked everything and it's my dipstick. But for this car it's discontinued. Anyone know where I can get the dipstick for this car from???
This looks pretty similar to the one from my 91 IIRC.

http://www.jegs.com/i/Chevrolet+Perf...51154/10002/-1

Or this. Pretty pricey though.

http://www.ecklerscorvette.com/corve...1985-1991.html
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Old Dec 16, 2012 | 01:28 PM
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If the motor is smoking that much out of the dipstick hole, either your rings are shot or your pcv valve is stuck.
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