This is starting to piss me off

[OverBoostinGST]

My 90 gst has a stock 14b, ported throttle body elbow, homemade mbc on 12 pds, dejon tool intake pipe, thats about it, about a week and a half a go id go to punch it and it just hesitates bad, has a really big noticable power loss, my boost gauge reads 2 pds in high first gear and the other gears it just goes up to zero, the fact that im getting at is basically im getting no boost what so ever,i mean i dont hear my bov anymore, and i hear my turbo spooling, i checked my bov, mbc is hooked up right, i checked for boost leaks (dont have a tester) and i checked my turbo for shaft play (there was none what so ever), im thinking its either a stuck open bov, the wastegate in the turbo is stuck open, or my fuel pump is dead, what could it be? ive been staying up night and day just trying to figure out what in the hell it could be, i thought my injectors could be leaking but i dont smell any gas? what do you guys think it could be? Its starting to be a real pain.

Thanks, Jesse

 

[Nanan]

Assess in this order.
A. Boost Leak
B. Stuck wastegate
C. Stuck BOV
D. Bad turbo

 

[herostar]

Assess in this order.
A. Boost Leak
B. Stuck wastegate
C. Stuck BOV
D. Bad turbo

Exactly my thought as well. Check your spark plugs too and make sure you're using premium fuel.

 

[aero_sallee]

^like they said. Build the boost leak tester, it costs less than $5.
http://vfaq.com/mods/ICtester.html