WG problems - testing

[Pasqualoni, James E]

On Thu, 02 Dec 2004 14:51:06 GMT, Ameer wrote:

So I tested my wastegate by putting vacuum on the small barb on the upper
chamber of the WG. It seems to hold vacuum fine, but I didn't really notice
a thud, just sounded like a diaphragm slowly closing up. Is this the only
test that should be done to test the WG? Is there possibly more than one
fail mode? The problem I noticed when I ran the engine was that there seemed
to be a hissing sound like a vacuum leak coming from the area of the WG. I'm
pretty sure it was the WG as I've replaced 90% of the intake/vac hoses in
there, but I can't be positive. Should I open the WG in trying to find out
if it's OK, or will I just be opening up a can of worms? Any advice much
appreciated. TIA.

-Ameer

------------------------------

Ameer,

Why are you testing the wg funcitonality?  Do you have a boost leak, or are
you checking simply b/c of the noise you mention above?  Are you not making
full boost?  What is the year/model of the patient? 

Jim