Ok when I start up my car it reads 19 psi vaccum, I know this is not right. It should read zero right? There is a hose connected to what looks like some sort of check valve that only allows air to be pushed in but not out or maybe it is not a chack valve. Should I hook up the gauge on the ass end of this check valve? But how is it gonna get vaccum then? Thanks.
19 psi vaccum
1 - 3 of 3 Posts
Well, I don't know much about the topic, but since no one else has replied I would say having the gauge read vacuum is not unusual.
I know from the www.vwvortex.com boards that its normal for the boost gauge to read vacuum under most conditions and that usually you're only in boost when driving hard or accelerating. If you're cruising on the highway at a constant speed, you should be in vacuum.
I know from the www.vwvortex.com boards that its normal for the boost gauge to read vacuum under most conditions and that usually you're only in boost when driving hard or accelerating. If you're cruising on the highway at a constant speed, you should be in vacuum.
Joined
·
408 Posts
Niether vacuum or boost if the engine is off. (some people call this zero but it is acctully around 15psi/30in Mg at sea level, less at high altitude)
Vacuum if the engine is on. (the engine sucks
Boost if the turbo is pumping air.
1 - 3 of 3 Posts
