turbo gauge

[1990gsx1781]

hey i just bought a gauge that shows vac press. also when i idle its at 0 and when i rev it it goes to -10 is that right... i thought it was suppost to be -20 at idle? does this mean vacum leak thank you

 

[r1991_4g63t]

where do you have the gauge tapped to?

 

[1990gsx1781]

where do you have the gauge tapped to?

i was told to tap it off the middle sensor on the firewall ( by the brake cylinder )

 

[1992awdlaser]

It's probably a vacuum leak causing it.

 

[1990gsx1781]

************ allllsoooo when i idle it stalls do you think this could be because of a " vacum leak " also thanx for your help guys

 

[r1991_4g63t]

do a boost leak test and find out

 

[1990gsx1781]

do a boost leak test and find out

to be honest i dont know how to do one of those is it hard do i have to test all vacum lines

 

[r1991_4g63t]

get a rubber connector to fit over the turbo inlet, with a pvc cap to fit the other end of the connector, drill a hole in the cap and put a valve stem in it, put clamps on both ends of the rubber connector and pressurize it, listen for leaks and put soapy water anywhere it could be leaking and watch for bubbles.

 

[1990gsx1781]

get a rubber connector to fit over the turbo inlet, with a pvc cap to fit the other end of the connector, drill a hole in the cap and put a valve stem in it, put clamps on both ends of the rubber connector and pressurize it, listen for leaks and put soapy water anywhere it could be leaking and watch for bubbles.

ok man thank you

 

[knochgoon24]

get a rubber connector to fit over the turbo inlet, with a pvc cap to fit the other end of the connector, drill a hole in the cap and put a valve stem in it, put clamps on both ends of the rubber connector and pressurize it, listen for leaks and put soapy water anywhere it could be leaking and watch for bubbles.

It might look something like this when you are done. I added a 90° to make getting the connector from my air compressor on easier. But a valve stem and an tire compressor works fine too.

 

[1992awdlaser]

************ allllsoooo when i idle it stalls do you think this could be because of a " vacum leak " also thanx for your help guys

Yes...