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356-930 356-930 is offline
Acceleration Junkie
 
Join Date: Aug 2007
Location: Laguna Beach, CA
Posts: 263
Garage
Quote:
Originally Posted by darling930 View Post
. . . I discovered this morning that one of the O rings on the intercooler had disintegrated. . . . After replacing the O ring however the car will start and run sometimes but only with a lot of throttle. It is blowing out a lot of white smoke however will not run if I let off the throttle. I think it is very rich and obviously I had adjusted the mixture to compensate for an unknown air leak. However if I adjust the mixture leaner it will not start at all. . . .
White smoke is either vaporized unburned fuel or oil. If too rich and burning, black smoke.
Smell the "white smoke." does it smell like fuel or oil?
You note, "if I adjust the mixture leaner, it will not start at all." Sure sign the engine is already too lean.
Again, suggest flooding the engine, attempt to start. If it starts,runs then dies, mixture is too lean.
According to my Bosch ref info, WUR CP on yr. 86+ 930's cold is 1.4-1.8 bar (@25C/75F. Warm is 3.75+/- 0.2 bar.
Old 11-30-2008, 02:15 PM
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