[Mk2] [Turbo] 1990 Turbo no boost!

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dazmaz
Posts: 44
Joined: Wed Nov 09, 2011 2:17 pm
Location: Edinburgh

[Mk2] [Turbo] 1990 Turbo no boost!

Post by dazmaz »

Ok guys iv been at this a while search and scoured the forums to find about nothing! so last chance make a new post!

Problem is the car wont boost, nothing! no turbo spool not a thing!

Started when i was at full boost and i heard a different sound than normal and lost all boost (sound like a pop) but not from the exhaust.

after that the car ran fine rev'd all the way and drove no problem just wouldnt boost! the exhaust note sounds like it has changed how ever or this could just be me thinking it has.

Things iv check:

All boost pipes
all vac lines
I have a good aftermarket boost gauge to read
I have removed the HKS boost controller and reverted to stock (thought this might of failed) it didnt.
removed the intake side and checked turbo play and it spins lovely
taken the actuator off and checked its movement and moved the waste gate by hand it moves.
also i dont have a cat installed i have a Blitz nur spec on the car.

Any help would be awesome or ideas!
Mike N
Posts: 670
Joined: Sun Nov 18, 2007 11:17 pm
Location: Still somewhere hot

Re: [Mk2] [Turbo] 1990 Turbo no boost!

Post by Mike N »

If you've pressure tested all pipework, wastgate actuator, and intercooler without finding any air leaks, take the down pipe off and check the exhaust turbine is still attached. Also check the wastgate washer seats fully flat agaist the turbo housing.
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