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wastegate or vacuum hose issue?

Old 03-30-14, 08:28 PM
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wastegate or vacuum hose issue?

I've been having a boost issue for a few weeks now. I still get full psi for both turbos but it feels like somethings sticking before boost kicks in. I'll go WOT, the gauge will stop at 0, there's a mooing sort of noise and then it jumps straight to 10 psi. I have no clue what this could be and nobody i've asked so far does either. Any help would be greatly appreciated.

-Joe
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Old 03-30-14, 08:43 PM
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I had an issue like this that would come and go at random or when I really was getting on the car sometimes.. would press the gas and the boost would just be at 0 and rpms still were going up but just didnt have the power untill boost kicked back in...
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Old 03-30-14, 08:48 PM
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did you ever find out what was the cause? It's constant in all gears for me.
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Old 03-31-14, 04:29 PM
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I had a problem like this with my FD. The coupler on my y-pipe had taken a dump and coated the side of the motor with oil and baked rubber coupler. After I fixed the leak with a new coupler I'd have sporadic loss of boost after a shift. I cleaned everything up on the side of the motor. I noticed the actuators on the turbos stuck sometimes. I cleaned them up, blasted a bunch of wd-40 on them then cleaned them down again and added some lithium grease. Problem was gone. As far as I can figure the waste gate actuator was getting stuck open making it take longer for boost to build.
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Old 03-31-14, 05:19 PM
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I'll wipe down the actuators tonight and drench them in wd40. Appreciate the tip.
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Old 03-31-14, 05:43 PM
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Please post results when you can! I believe I need to do the same
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Old 04-02-14, 01:02 PM
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It must've been the actuators, I cleaned them and sprayed some wd40 and all is right with the world again. Thanks for the idea fdhoward.
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