I useta have the same issue for many years... especially after...September 19 2008 at 10:10 AM
Tony Natoli, SoCal
Response to Oil on start-up
... my car sat for 7 years.
After its ressurection, I would sometimes not run the car for 3 - 6 weeks and when it started, large puffs of blue smoke went everywhere. After a few minutes of running, it appeared to go away.
The problem got progressively worse over the years since... I now have 165K on this engine... and I came to the same conclusion you did... Since it was OK if it was started and run frequwntly, say every other day, then the problem must have been valve stem seals.
One day I thought I would try my "Engine Overhaul in a Can" technique to hopefully improve the compression a bit all around... and also because... over the last 45 years of my life or so... I have been suggesting people try this method... without ACTUALLY ever doing it myself.
I have SEEN it done, and I have seen many FAVORABLE results from its attempts... but never actually did it myself, or did it to any of the cars I have ever owned.
What I did was... slowly dump about 1/3 of a quart of Automatic Transmission Fluid (ATF) down the throat of my carb... while rev-ing the engine between 3000 and 4000 rpm, over the course of about 10 minutes.
CAUTION... this makes CLOUDS AND CLOUDS of WHITE SMOKE! Your neighbors will come outside and might possibly call the Fire Department... Forewarn or go to a secluded area...
So... afterwards I re-tested my compression and it came up a full 10 points all around to 145... and then... I noticed over time... I didn't have anymore of these smokey start-ups!
Hmmmmm... So... this means it could not have been valve seals, but whatever it was... it went away for good. Its been at least 2 1/2 years...
Black Tooth and me... since 1983!
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