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Old 12-02-2002, 09:43 PM
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Post 86' buick smokes like crazy?

Hello I have an 86 buick I've been working on and it blows smoke out like you would'nt believe. I was driving it one day and the timing gear went and crushed all the exhaust valves. I changed all the valves and pushrods out along with seals and new timing chain and gears, but when I put everything back together the damn thing starts to smoke like crazy after about 15 sec. its not the coolant, it is pure white/grey smoke just pouring out the exhaust. I did'nt coat the head bolts in sealant, thats about the only thing the manual did'nt mention, but everything was done by the book, help!?!!?

P.S. its a 3.0 v6 btw

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Old 12-03-2002, 01:19 AM
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did you check all the pistons for cracks or broken places? I would never trust a factory cast piston after it kissed a valve, if you have a couple cracked pistons or broken ones it`ll smoke like no tomorrow and skip like it too. Run a compression check, if compression checks out ok then i`d suggest checking the intake gaskets and make sure there not leaking and sucking in oil. Also, If your car has a modulator valve in the transmission, disconnect the vacuum line where it connects at the engine and check it for any traces of tranny fluid, if the modulator valve is ruptured it`ll make it smoke also.
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Old 12-03-2002, 06:07 PM
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Doublevision is right .. its hard to tell the difference between white smoke (coolant) and blue (oil). Definitely do the compression check along with a bleed-down first.
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