ok guys i need help. i had a ssautocrap manifold. boosted fine for the time it lasted.
the last time i saw boost it was in 4 gear and it made it to 10 pounds, then it just quit. found manifold cracked again. so now i have a revhard manifold and can't get it to boost for ****. tried a new wastegate and still nothing. checked over all ic pipings and vaccum lines still nothing.... the only thing i can think of is the waste gate vaccum that is on the compressor housing isn't pushing enough for it to open the wastegate. could i try a straight source of vaccum??? thanks ahead of time

 

anyone???

 

yes im getting no boost same problem as you...

 

afternoon bump

 

if it's not opening the wastegate, you would be overboosting

 

evening bump really need help. nothing seems to work

 

morning bump

 

try another vac source. what kind of turbo are you running?

 

already tried a diffrent source of vac. still nothing. but i think i found the problem. i think the turbo charger took a **** on me. when you feel for shaft play it's not bad, but when i turn the car on and watch it spin it doesn't spin till you rev it and when you watch the turbo spin while giving it gas, then once in a while you can see the shaft just wobble. i think it's losing pressure due to shaft play leaking a little bit of oil too. good luck to the rest of you who have no boost problems. i hope a new turbo takes care of it.

 

yeah, go ahead and replace the turbo. my first turbo stopped spinning after a month. it was my daily driver back then, so i just drove with it on. a week later, i lubed the fins on the compressor side with some oil. started it up and it actually started to spin.

when i was replacing the turbo...i found this:


better take yours apart and check it!