Blue smoke

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Sep 22, 2003 | 09:32 PM

1985vette

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Instructor

Joined: Aug 2003

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From: Newbury Park CA

Blue smoke

Recently, whenever i let my vette sit for over 4 hours, a varying amount of blue smoke will appear on startup. I was wondering if anybody knows where i should start looking in order to resolve the problem. Thanks

[Modified by 1985vette, 2:32 AM 9/23/2003]

Sep 22, 2003 | 09:37 PM

jbbiggs

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From: Hickory nc

Re: Blue smoke (1985vette)

I just traded for mine and it's doing the same thing, I think it's the valve seals are bad, my heads are coming off tommorow, and will have new seals installed

Sep 22, 2003 | 09:40 PM

86Coupe

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From: Omaha, Ne GO BIG RED

Re: Blue smoke (jbbiggs)

My '86 does the same, no smoke in the morning, but smoke at lunch time and at 5pm. Gotta be seals or guides, heads getting done this winter....

Sep 22, 2003 | 09:52 PM

Southern Comfort

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Joined: May 2003

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From: Las Vegas Nevada

Re: Blue smoke (1985vette)

Use synthetic oil....dosen't smoke. Won't solve the problem but won't smoke either.

Sep 22, 2003 | 09:57 PM

dwestsr

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From: charlotte nc

Re: Blue smoke (1985vette)

Yep, you got the old small block chevy 100,000 mile valve seal "blues". I just finished changing my seals (heads on the car) for the same reason. It fixed the problem but it is a PITA to do. New Valve seals will usually fix this if the guides are not excessively worn. Be sure to use a good quality seal material such as Viton and don't forget the o-rings under the retainers. Roller rocker go a long way towards reducing valve guide wear. :cheers:

Sep 22, 2003 | 09:58 PM

dwestsr

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From: charlotte nc

Re: Blue smoke (Southern Comfort)

I disagree, synthetic oil made no difference in my 86. It smoked on start up until I changed the seals.

Sep 22, 2003 | 10:48 PM

neverendingproject

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From: memphis tn

Re: Blue smoke (dwestsr)

synthetic oil leaked past my seals where dino oil didnt. this wasn't my vette and i didn't own it until it was well used. moral of the story is, dont wait to use synthetic till its half worn out, too late by then.