how to tell if turbo is fucked?:::::UPDATE::::::
 

i have a turbo but it doesn't build boost past 1-2psi. i can hear it spool but i never get any boost. i have put a MBC inline and it doesn't change anything. is my turbo fucked?

Re:how to tell if turbo is fucked?
 

and you checked for leaks and to see if the wg is working right?

Re:how to tell if turbo is fucked?
 

sounds like your charge pipes are leaking somewhere. check all your couplers very good.

Re:how to tell if turbo is fucked?
 

check again for leaks, check the turbine housing itself, then make sure your boost gauge is good(ie: swap it with a known working one) then wire your wastegate shut, go for alittle drive and see if you start to build more boost.

Re:how to tell if turbo is fucked?
 

sounds like you most definitely have a boost leak. Check all clamps and if you are not using hard pipes check and make sure there are no cracks in the rubber.

Re:how to tell if turbo is fucked?
 

checked all the pipes again and again but still nothing. i finally hooked my downpipe up to the rest of the exhaust and now i can't even hear the turbo spool.
what would be the symptoms if i needed a rebuild? it doesn't blow smoke but i can't hear it spool.
what are the symptoms if i need it balanced?

i am getting pretty frustrated, i have swapped just about every vacuum line and even ran the wastegate source to the IM.

Re:how to tell if turbo is fucked?
 

check the wastegate dood

Re:how to tell if turbo is fucked?
 

i've checked it, and it's closed and i have changed three differant vacuum sources.

Re:how to tell if turbo is fucked?
 

recheck your mbc. i bet you either fucked up the install, or its fucked.

Re:how to tell if turbo is fucked?
 

Have you checked it for shaftplay?