my car will not build boost, it will build 1 psi and hold it and it is a new turbo. what do yall think the problem could be? "please help"

 

check your charge pipes/couplers for leaks.

 

Hey kyle I think you need a new turbo
sucks dude ill see what i can do....

 

why do you assume its the turbo??

99% of the time, there is a blown coupler or some other boost leak....

 

disconnect the waste gate and see what it does!... no jk

as mentioned check couplers etc... does it feel like its boosting.. as in pulls good? maybe boost gauge not reading properly?

i would vote leak though

 

where are you runing your vacuum source from ?

 

i was there when we tried to get it to boost and yea we even blocked off the wastegate flange lol and it still only built 1 pound and we checked the charge pipes and couplings and such and no it definatly doesnt pull like its building boost

 

Are you guys taking it to redline?

 

not everytime but yes we did once and... nothing but 1 lb

 

Do you have a boost controller on there? I was talking to a guy that this happend to the other day.

 

yea hes got the greddy profec II or whatever it is and its confusing we couldnt get it to work very well either

 

Try running off of the wastegate spring.

 

we tried it with no wastegate we put a block off on the flange and still nothing

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C-YA! &raquo;</TD></TR><TR><TD CLASS="quote">we tried it with no wastegate we put a block off on the flange and still nothing</TD></TR></TABLE>

Did you disconnect the boost controller first? I think that's what hes getting at.

Disconnect the boost controller and run off the wastegate.

 

Yeah get that boost controller off there, I know it's expensive and you want to use it but try it, thats my guess!

 

Build a boost leak tester and hook it up to a compressor and see if the intake system is holding any pressure, easiest and cheapest test you can do.

Most of the stuff you can find at a home depot, probably 8 bucks tops. If you don't have a compressor, a little brother, some sugar and a bike pump will be fine.

 

yes this method work great for boost leaks

 

And if the leak tester checks out fine, then I would go into looking for wastegate issues.

 

i highly doubt it has anythign to do with the turbo itself. check for exhaust leaksto. if exhaust is exscaping before it meets the turbo, its obviously not going to spool properly.

 

its gonna be pretty noticable if theres a leak before the turbo..its gonna be loud, either your charge pipes are leaking, or the boost controller is jammed/broken, also check the bov could be leaking from there too

 

And you'll more then likely have a big black streak wherever it's leaking if it's before the turbo.

 

yea weve checked everything and how could it be the wastegate if we took the wastegate off and put a block off plate on it? but yea i think it more than likely has something to do with the boost controller also

 

well we unhooked the boost controller and nothing happend still only built 1 lb plus theres a little bit of oil in the inlet of the turbo? im takin it thats not a good sign

 

Check the fins on both the comp and the turbine wheels. Sounds like something on the turbo is broken. And oil on the inlet like that usually means a broken seal.

 

yea i figured the seals might be bad probably needs to be rebuilt