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what does it do?
Posted: Sat Jan 28, 2006 12:32 pm
by numbnuts
on the blow side of the turbo (4.2 GU) there is a silver diaphragm thing connected to the exhaust manifold next to the dump pipe, what does it do? and how do you check if its working?
Posted: Sat Jan 28, 2006 1:04 pm
by stool
Controls the boost
dont play with it

Posted: Sat Jan 28, 2006 1:10 pm
by numbnuts
how do you know if its working? I was thinking of putting some air from compressor in the rubber tube to see if it moves.
Posted: Sat Jan 28, 2006 1:26 pm
by ratboy
yes yes yes play with it more BOOST= more power
Posted: Sat Jan 28, 2006 1:28 pm
by ratboy
use a vacum pressure bump to test it
Posted: Sat Jan 28, 2006 1:34 pm
by stool
You could damage the wastegate with compressed air
buy a boost gauge and go for a spin around to block first.
But if its not working and giving the engine to much boost
the engine should have a over pressere blow off valve to protect the motor.
Try a boost gauge to see if you are getting the correct psi