General Dump Valve Probs

[Dunc Maclean]

just a quicky, i got probs with my dump valve. basicly its not dumping at all anymore unless i put my foot to the floor and give it full boost. it used to dump when only be light on the throttle and didn't need much boost to make it dump. is my diaphram sticking? or do i have a boost leak? or is it one of my vaccume pipe leaking?

also both my standard boost guage and my aftermarket boost guage have stopped working?! why is this? could the probs be related?
before the guages stopped working tho, they were only reading about half of what i was actually running! i have Teed off the second aftermarket boost guage from the standard one so could this be affecting the guages not working?

any help would be great cos i miss my standard boost guage reading past 1 bar and i miss my dump valve dumping lots

cheers

Dunc

Standing 1/4 mile at Santa Pod - 14.63 @ 94.57mph

 

[NickyB]

Did you fix this Dunc?

Sounds like a vacume leak to me, I had the same thing!

 

[chrisunoman]

Ive heard of a few people having problems with dump valves on their Uno Turbos, but when one bought a Bailey twin piston one they said the problems went away.