V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

strong exhaust.

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Old 07-25-2001, 09:25 PM
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strong exhaust.

I got an '88 camaro with 2.8 mpfi.when I start the car smoke comes out the exhaust. It is white and smells like gas.The car doesn't burn oil and the exhaust smells strong and rich. Any ideas?
Old 07-25-2001, 11:12 PM
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Go to the Headgasket of the class.
Bet you are loosing water, too.
I just wrapped up mine on my S-10 Blazer (same engine).
I did mine, myself.
Good luck. It's a bloody messy job, very time consuming.

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Old 07-26-2001, 10:31 AM
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Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
I've heard that white smoke on startup can also be leaking valve seals. The valve seals sit on the valves, and keep oil from dripping into the cylinder. When oil drips in as the car sits, when you start it, the oil burns off, and gives you start-up smoke.

However, my valve seals have been leaking since '96, and my start-up smoke has always been blue. I don't know where people got the "white" from... search the tech area for "white smoke" and "valve seal" and you'll probably find those messages.


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Old 07-26-2001, 04:22 PM
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It isn't the smell of oil that i'm getting.It is the smell of gas.the exhaust smell while it is running smells like gas.The car doesn't use hardly any oil.
Old 07-26-2001, 11:05 PM
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Car: 85' Firebird (Project), 92' RS
Engine: 2.8L, LS1
Transmission: 700R4, 4L60E
Axle/Gears: 3.42 Open , 10 Bolt (ukn)
well, i'm no mechanic, so don't take me word for word on this. But when my car died, i had a problem with smoke coming out of the exaust, the smoke was white, and came at random bursts. Although, this isn't the same problem you're experiencing because your's is at startup. Now, when mine happened, a friend had put two plugs in that were the wrong size, so when the engine was turning, two cylinders weren't firing, I think the gas was probably just burning off the block without a true ignition and was passing out my exaust. But that's just a guess. Maybe, you have one or a few foul plugs, that aren't firing when the engine is first started. , but like i said, i'm no mechanic.
Old 07-27-2001, 01:47 AM
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well white smoke comes from water, and blue smoke comes from oil. Blue smoke is the one you should worry about
Old 07-27-2001, 01:34 PM
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Car: 1983 Pontiac Firebird
Engine: 400HP 350
Transmission: 700R4
Axle/Gears: 3.42
I had the same thing happen to me all it was was condensation in my lines, try running dry gas, and see if that helps. There's some real good stuff at autozone called water remover, made by castrol.

Rob

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Old 07-27-2001, 03:50 PM
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Car: Firebird
Engine: 3.1 L
Transmission: auto
You always have white smoke coming out of the exhaust, even when the engine is hot?
if yes, you'r "burning" coolant,
if it's only after you start the cold engine, it's from condensation and you don't have to worry about.
your engine also could run to rich and part of the gas is not getting burned.
How is your gas/mls result?

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[This message has been edited by Horst (edited July 27, 2001).]

[This message has been edited by Horst (edited July 27, 2001).]
Old 07-27-2001, 10:20 PM
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Car: 85 Camaro SC
Engine: V6
Transmission: 700r4
My 2.8 dropped the lower radiator hose,all water came out,motor over heated,and I never knew thanks idiot lights.I cracked my pass side head on the no.1 spark plug,blew the head gasket too, ran the car like that for 3 days until I tore the motor down.Tommorow I should be done with the rebuild.Fire her up and off to the exhaust shop.

[This message has been edited by 85SportCoupeto89RS (edited July 27, 2001).]
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