Smoke at startup

[Hib Halverson]

Originally Posted by Paul Workman

Well, other issues not withstanding, the little (blue/oil) smoke issued by my 90 on cold startup disappeared with the installation of exhaust stem seals when added to my heads at approx 50k miles. And, overall consumption was reduced significantly enough to make an unmistakable improvement.

Just sayin...

Note my use of the phrase: "...if it's very noticeable and happens regularly..."

I should have maybe added something like "...more than a little...".

I agree that a little oil smoke on cold starts is indicative of a 90 w/o exhaust valve stem seals and with some miles on the engine.

I've often wondered why Lotus and GM did that. I've also often wondered if the reason that happened.