Boost

[Jay Kempf]

Hi guys,

Got the avant on the road for some quality time finally in the last 
couple days and it is actually running and driving quite nice for it's 
age and the time it sat. The new fuel pressure regulator seems to have 
done the trick.

I can get about 1.4-1.5 barr of boost  out of a possible stock 1.7-1.8 
on the gauge. Last time it was like that I changed the freq valve and it 
immediately responded. So I went and checked the freq valve and with 12v 
I get immediate click and release and flow through in the right legs. I 
also checked the vacuum lines to and from the freq valve and boost 
bypass valve and all the rubber parts around those components. All is 
perfect and holding vacuum and pressure. Checked the line all the way to 
the fuel pressure regulator and all is fine. I made all that stuff new a 
while back. I do not have working cruise control so I need to check 
there for possible vacuum leaks I am more guessing electrical. Seems 
just a simple leak somewhere would limit boost slightly.

But what other thing could be causing a lack of full boost. The car revs 
freely and the boost is not slamming so it seems the bypass is working 
anyway. Is there some way to check and see if the wastegate is working 
properly, stuck slightly open or something?

Really nice to be driving it again. More to do but I feel we are on the 
road to a full recovery now.

-- 


Regards,

jfk

802 272 5868
jkempf at madriver.com