ouch, sucks not blows????

hello, can anyone tell my exactly where the boost gauge line is supposed to hook up to, i have my gauge cluster out and i see where it hooks there.... but how is the other end supposed to be??? i have it now hooked up where the vac. diagram you have posted says, but the line sucks and it tries to make my gauge read backwards, has anyone had this problem and how did you fix it...and also thank everyone for all the help i have been recieving from this site...as soon as things get better around here you will be seeing a membership request coming to you...

I connected my boost gauge to the vacuum tree on the driver's side of the firewall. You're correct, it does see both vacuum and boost. Most guys run a combo gauge type that reads both vacuum abd boost; it's nice to be able to see how much vacuum your engine is pulling for diagnostic purposes. If you have only a boost gauge you'll either have to rig a one-way valve in the line or just tolerate it. I'm not a gauge expert but I don't think the vacuum should hurt it.

HTH.

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Joe F.

JR's Place - My 87 TC

yeah i realize that the gauge isn't hurt by the vacuum, but i'm tryin to get the stock gauge to workand my stock gauge doesn't have a vacuum side...

The stock gauge was sourced at the vacuum tree. It just didn't respond to vacuum

hey good news,.....i'm an idiot...lol
i finally took the car for a really short drive and had the guts to hit the gas a bit hard and the boost gauge jumped up to about 5psi. and then of course dropped when i let off....now only have oil gauge problem left....oh yeah, almost there...lol