no boost
 

:'( :'(the turbo spools but the vac/boost gage wount drop below 10 inch pounds of vac, i have a manual boost controler and its all the way closed and it still wount drop below 10 inch pounds....no boost leeks and i can hear the turbo spooling, its on a 91 ls teg. any ideas?? :'( :'(

Re:no boost
 

are you driving it?

Re:no boost
 

no, it's my friends

Re:no boost
 

as in is the car moving, under load....not who is behind the wheel

Re:no boost
 

yea, my bad ::) yea the car is moving and its under all the load the car can be under

Re:no boost
 

and why do you car if it goes below 10 vac?...or do you mean above?...check that the wastegate is hooked up right

Re:no boost
 

it wount go below 10 inch vac, as in to, 0 or start to make +psi. ive played with the wastegat alot and ive even tryed unpluging it, to see if we could get some boost out of it and still nothing

Re:no boost
 

what turbo and what motor

Re:no boost
 

1. turbo manifold leaking - check for head interface and turbo interface. what kind of gaskets are you using? sheet metal works well here.

2. wastegate stuck open or wastegate valve leaks

3. compressor inlet restricted or blocked - if you're using a rag to filter the air, guess what...no boost. take off everything connected to the inlet and see if it helps.

4. leak after compressor outlet - check all pipes, pipe couplings, interface to turbo, leaking bov, leaking intercooler.

Re:no boost
 

the turbo manafold isent leeking
im not sure about the wastgate
and for an air filter he is running panty hose
and ive been throught the charge pipe tighting every thing
T3/b18b