Bypass valve no worky?

**Orion_134** · 07-16-2006, 08:38 AM

I have a Paxton bypass valve with two nipples and an adjuster nut on top. I have the adjuster nut loosened all the way, vacuum/boost reference hooked to the top nipple, and the bottom nipple left unhooked. The motor pulls 11" at idle and the valve will move smoothly if I push on it or pry with a screwdriver. Any ideas?
Jesse

**F=MA** · 07-16-2006, 06:49 PM

I don't know what tha pax valve looks like but the only way these things fail is when the internal diaphragm is ruptured from overboost or too much flow for the valve.

F=MA

***speedytang*** · 07-17-2006, 12:26 AM

So if you put your finger over the bottom nipple does it open under vacuum?

**Orion_134** · 07-17-2006, 04:46 AM

Didn't try that. The only way that it could be ruptured is if it was that way when I got it, I doubt 8-10 psi ruptured it...that's all I've seen.
I've got a vacuum pump, guess I'll try that little tidbit, if it fails, I'll be in the market for one with the same bolt/flange pattern...y'all know any?
Jesse

**Orion_134** · 07-18-2006, 06:55 PM

Well, hooked up the vacuum pump to both ports, plugging the other port, and to no avail. Does anyone know another valve with the same flange/bolt pattern?
Jesse