RE: RE: Pressure Test

From: Jamie Calder (jcalder3@cfl.rr.com)
Date: Wed Jul 12 2006 - 14:33:29 EDT


-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Ray Block
Sent: Wednesday, July 12, 2006 11:58 AM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: Pressure Test

"I'm curious how one determines the condition of a cat through a vacuum
test?"

What I was told to do is to hook up a gauge to any vacuum port. If the
vacuum drops with increased RPM then there may be a blockage somewhere. It
made sense to me since if the cat was clogged the back pressure would
increase and vacuum would decrease. I realize there are many variables but
it sounded like a good, simple place to start. Anyway my vacuum just
increased as RPM's did.

.
.
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