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Wastegate Not Screaming? Lost Boost Too.

AlpineFreak

By AlpineFreak,
in Engines & Forced Induction

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AlpineFreak Enthusiast

AlpineFreak

Posted
Posted

hi all,

Cruising into work tonight i decided to have a bit of play, shifted into 4th at high revs and wastegate didn't open (couldn't hear screamer) and i'd lost boost. I can hear turbo spooling but not coming onto boost. I pulled over and car began to idle really rough. I'm not too sure what's going on, any help will be appreciated.

Car mods:

GT35/40

PowerFC

FMIC

Blitz spec R Boost controller

bosch 040 pump

turbosmart ultragate into screamer pipe

550cc injectors

Turbosmart BOV

Thanks.

AlpineFreak Enthusiast

AlpineFreak

Posted
  • Author
Posted

haven't been able to really check anything yet, cause i had to get to work. But there was no loud bangs or anything.. Definately gotta check everything out tomorrow. I'm hoping it's just something simple.

I don't think it was makin boost, or very low - not pulling as hard.

scathing Grand Master

scathing

Posted
Posted

Yeah, check for leaks on the intake side. Your wastegate won't open until you hit a certain level of boost, but your turbo would still get spooled.

You should take it easy, since it therefore means your turbine speed isn't being regulated anymore.

Any leaks in the intake would cause rough idle, and stalling issues. Just ask any n00b who sticks a venting BOV, with the spring set loose, on their car.

Craved Grand Master

Craved

Posted
Posted
would that cause the rough idle though?? i'll check her all out in the morning and get back to ya. thanks

i have blown 2 IC hoses since my new install went in .. pretty close to yours.. only thing is that my car wouldn't run AT ALL with the hose off.

could be a split in a silicon hose enough the limit boost but allow air though..

only other thing would be turbo seizing.. or gate stuck open..(but you would notice the noise with a screamer pipe..

good luck.. hope it aint nothing major for you.

AlpineFreak Enthusiast

AlpineFreak

Posted
  • Author
Posted

hey all,

thanks for all the help, i actually found the source of the problem. I've got my Z32 in series with the intercooler and the Z32 had actually cracked underneath. Replaced it and running like a beauty again.

B)

AlpineFreak Enthusiast

AlpineFreak

Posted
  • Author
Posted (edited)

Z32 is right before intake plenum, sits right near the top of the radiator.

I'd have to agree on the abuse side. <_<

Edited by AlpineFreak

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