Looking for some help. I have a autometer liquid filled boost gauge that is tied into manifold and I thought it was not working so I removed the line and blew air in and the gauge moved. I have had the car stored for the past 10 years and I dont remember if the gauge ever moved off 0. I understand that the gauge will be at 0 when the intake has vacuum but when should it move? I have a B&M supercharger I believe it is a 144 or the 174 model. I just looked at my operation manual and it says the the boost gauge will sit at 0 until wide open throttle does this sound correct?
Thanks

 

should move whenever ur in boost to show how much is bein produced

 

Thanks for the reply. I am not sure when its in boost. I got on it and the gauge never moved any ideas?

 

where do u have it plumbed in at if ur on it it should be producin boost unless something is wrong

 

the one in my cummins moves as soon as it starts gettin in boost

 

The boost gauge is tied into the intake manifold under the supercharger. I removed the line off the intake and the intake is sucking air. My supercharger manual says that is normal operation until wide open throttle.

 

You "got on it", but did you get on it enough? You should actually be seeing a negative reading (vacuum) when driving normally. Boost from the blower isn't going to occur until you hit WOT, or until it's capable of overpowering natural atmospheric pressure. Atmospheric pressure (barometric) at sea-level equals 1 atmosphere (29.92 in./760 mm of mercury), which is 14.70 lbs. per square in. So, 14.7 is the pressure your engine would be running at naturally aspirated. Your huffer needs to put out more than that to boost the engine. You would need to adjust those figures based on the atmospheric pressure in your area.

 

Thanks for the reply again. So with the gauge tied into the manifold that is working correct. I just didn't get on it enough to get the boost gauge to move. Thanks again.

 

Auto Meter GaugesI use autometer in all my cars