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Blown turbo or Not?

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Andy5

15+ Year Contributor
693
0
Oct 29, 2003
Kenosha, Wi\Oceanside,CA, California
Ok last night i was driving around and some kid in a Lancer OZ was trying to play with me soo i dropped it down to 2nd gear and took off for about a second then my tires broke free and then all of a sudden i feel loss of power the car dosen't wanna go.

So i'm thinking man i fried a ring or ate a valve, so i'm reving the car up, i get no boost and no BlOw off. Turned off into the McDonalds i'm inspecting my turbo, theres no oil leaking from the intake side. So i'm like ok the motor is hot and its late at night i'll check it in the morning.

I walk out to the car today i undo my intake hose and i'm looking at the turbo nothing still all polished, soooo i was thinking if i sezied it, the turbine wouldn't spin, so i reach in and spin the turbine, spins freely no shaft play or anything its not getting hung up on anything either. So i'm basicly lost, I looked at the bar to the wastegate its still attached everything looks normal.

My guess is that maybe the acuator is screwed and not closing the wastegate? I rev up my motor the bar dosen't even move. I wish i could ride on my hood to see if it opens but thats not safety first :D.

If my theory is right i'll be glad that it didn't just undo fully :p i'd hate to run 99psi. BTW there wasn't a boost spike it hit 10psi on my autometer and 14 on stock so..... i dunno :( Lets hear the experts on this one!

If my spellling and english is bad, its cause i just woke up and to lazy to reread :rolleyes:
 
ok so u feel no boost at all...u dont feel it pull at all....whoa that sucks man welp u mite need to get a new wastegate and a few other things that release the pressure from the turbo....and basicly there is prolly so much pressure that there is no blowoff cuz the waste gate if ####ed....
 
i was thinking the wastegate stuck open. the car as abosolutly no boost at all its basicly a N/T Laser right now with a turbo on it hehe. Man i'll never go N/T agian :)
 
Check for a major boost leak..you could have one...also...spray the WG actuator with some grease and use some vice grips to manually move it in and out it may be stuck and this may free it.

Also chek, where the wastegate arm is attached to the manifold there is a little white round thing under it..make sure that it is in there all the way...hammer it in if you have to.


One more thing, your bcs may be bad or something.

Try connecting a vacuum hose straight from the J-pipe vacuum hose nipple (pipe off turbo to intercooler) straight to the wastegate actuator.

This should give you 9lbs if you weastegate is working correctly.
 
i doubt its a boost leak the turbo dosen't even spool up. I'll spray some WD40 on the acutator see whats up i'll look at that white thing, i'm sure the wastegate is stuck open. when it warms up a bit i'll go out and check it out :mad: God i hate WI
 
ok so since its cold out side i decided to start the car up and play w/ the WG bar it dosen't move whats so ever, i had a stethi-scope to put on the turbe, the turbine is deff spinning just not enought to create boost. do you think the WG is sezied open or could it be the actauator?
 
Did you pull the cotter pin out of the bar that sticks out of the actuator? And if you did, did the wastegate open and close freely?
My acuator just died on me as but it died shut and I overboosted.
 
no didn't take that pin out i don't have one to replace it. Maybe i can just rig something up :D i'm gonna do that tomarrow, my dad hates when i fiddle with my car hehe. If i ever got a big turbo he sure wouldn't know about it :p

If my actuator did die, i guess i'm lucky, i would hate to be over boosting :(
 
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