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

seafoamed engine... smoke from ex. mani.

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Old Mar 13, 2007 | 11:55 PM
  #1  
adam86's Avatar
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From: Modesto, CA
Car: 1989 GTA
Engine: 305 TPI
Transmission: Stock 700r4
Axle/Gears: 3.08 POSI
seafoamed engine... smoke from ex. mani.

hey guys i used some seafoam today to clean my engine out and i poured some into the brake booster vaccume line into the intake manifold...

well after i shut it off and let it sit to make the seafoam break down the gunky stuff... i turned it back on and got the normal exhaust smoke but my exhaust manifold started smoking too just alittle bit.

then one of the manifolds stoped smoking but the other one continued until all the seafoam burned off.


the car doesnt seem very loud besides the flowmasters... is this a exhaust manifold leak?

has anyone replaced gaskets? how hard and did it take along time?
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Old Mar 14, 2007 | 05:36 AM
  #2  
drdave88's Avatar
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From: Waterford, MI
Car: 1998 Camaro Z28
Engine: 6.0L
Transmission: 4L60E
Axle/Gears: 3.73
any time you have smoke coming out of anywhere other than your tail pipe, its a leak.
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Old Mar 28, 2007 | 12:47 PM
  #3  
Pyrice4's Avatar
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From: Deland, FL
Car: 1991 Pontiac Firebird
Engine: 3.1L V6
Transmission: M5
Re: seafoamed engine... smoke from ex. mani.

I seafoamed my V6 Firebird and more smoke came from the headers then the exhaust
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Old Mar 28, 2007 | 01:24 PM
  #4  
adam86's Avatar
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From: Modesto, CA
Car: 1989 GTA
Engine: 305 TPI
Transmission: Stock 700r4
Axle/Gears: 3.08 POSI
Re: seafoamed engine... smoke from ex. mani.

sorry buddy but we have some major exhaust leaks coming from our exhaust manifolds...

time to head to the autoparts store for some exhaust gasket + liquid wrench



is your car louder than it should be?
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Old Mar 28, 2007 | 02:35 PM
  #5  
pletch's Avatar
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Joined: Feb 2007
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From: Holton, MI
Car: 86Camaro RS
Engine: 2.8L V6
Transmission: Auto
Re: seafoamed engine... smoke from ex. mani.

hmm maybe i wont be using any seafoam on my car then.

an old timer once told me that removing gunk from some places is good but in other places its supposed to be there for when the parts breakdown. just a though
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Old Mar 28, 2007 | 06:04 PM
  #6  
1988CamaroSC's Avatar
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From: Adirondacks, New York
Car: 92 Camaro RS
Engine: 5.0L
Transmission: AUTO, 56k orig
Re: seafoamed engine... smoke from ex. mani.

just did some seafoam too, i got a little smoke from my passanger manifold too, i know theres a leak there. but its not worth wrenching on yet, when the time comes, headers will take place.
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