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Old 05-11-2008, 08:15 AM   #19 (permalink)
etecnifibre
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Join Date: Jul 2006
Location: Madison, IN
Drives: 1995 Stealth R/T TT
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Default Re: Boost leak? or worse?

Quote:
Originally Posted by syangvr4 View Post
If you look at the back of your plenum there is a larger Vaccum line that goes to your brake booster and to the right of the plenum you have the clutch booster vaccum line. These two hoses I believe contain your check valves. The point of a check valve is to direct air flow one way only. like letting vaccum into the brake/clutch booster and keeping boost out. To indicate if you have bad check valves:

1. You cant brake boost or brake while building boost.
2. Your clutch seems to move at you while building boost.
Quote:
Originally Posted by phantomrt View Post
^^^ basically sums it up. There are two large vacuum lines going to the intake manifold. One is for the brake booster, which is on the back (firewall) side and the other is for the clutch booster, which is on the driver's side. The clutch booster hose is about 10"? long and pre-bent. It will install nicely either way but it is supposed to go on only one way. Inside this hose is a check valve (1-way valve)--you cannot tell by looking at the outside of it, but it is in there. Or, perhaps somewhere in the last 15 years someone decided to replace it with a piece of silicone hose or something and the check valve is long gone.

It appears I installed the hose backwards. Thanks for the help, guys.
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