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Re: WGFV testing procedure.
> I have a hard time with that statement.......
> If you remove the WGFV, you are REMOVING the back presure from the WG
> diaph. meaning, the only thing that is preventing your WG from opening
> is the spring in the WG?...........
> How can it possibly go to overboost?........
> Your thoughts............
A torn wastegate diaphram was my first thought. Scott J pitched
in with a leaky hose to the bottom side. Another possibility
is a mechanically sticky wastegate. Plenty of ways to go bad.
paul t-