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flightlead404 flightlead404 is offline
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Join Date: May 2015
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Originally Posted by Alan L View Post
Yes I am at a loss to as to how to diagnose loss of fuel pressure under boost - unless a gauge is specifically set up for road test.
It really seems like a massive fuel dump on boost - or an air leak - or both.
The best way to test air leak is pressurise the system and find where it is leaking from - you may be surprised. What does the WP drop to on boost? You can test this in the w/shop. Presumably he has if he is checking the WUR out.
I concur. I don't see what mechanism could cause a sudden and significant drop in fuel pressure at boost onset.

And are you talking about system pressure or control pressure?

How was the "drop in fuel pressure" diagnosed? What actual instrumentation was used? Or is the mechanic just guessing?
Old 02-23-2018, 03:02 AM
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