Thread: Vapor lock
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TDH888 TDH888 is offline
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Join Date: Jul 2009
Posts: 130
Originally Posted by mooney265 View Post
I had a problem similar to this and was able to immediately correct it by:

lowering my WUR cold start pressure. it was too high at cold start and that was causing a "too lean" condition when attempting to start when cold. what little fuel was evaporating before combustion could take place... [my best guess]

there are three pressure settings for the WUR: cold, warm, and boost. the first two can be checked with a CIS test kit and to check boost, you would need to hook up a mighty-vac to the bottom of the WUR to check boost.

Oh yeah, I too thought it was my accumulator... still got the same accumulator, and she starts right up cold/warm/or hot...
Thanks Mooney for you reply and advised. Is it possible to lower my WUR's cold start pressure if my 930's WUR is stock ? Is the stock WUR adjustable?My mechanic agrees that its not vapor lock after he did some additional test.


Old 09-20-2009, 03:27 PM
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