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Author Topic: Ways to know if your TURBO is blown??  (Read 63 times)

Offline EURO44B6

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Ways to know if your TURBO is blown??
« on: August 23, 2011, 04:26:27 PM »
Hey Audi Fam!!

I have a good question for you! I appreciate any suggestions....

I have a 02 b6 A4, Stage II 23psi, big injectors, GFB BOV and so on....

When I drive normal, barely boosting, car runs perfectly fine. When I come to a stop, idle is a little rough. When I punch it from stop, car will take off fine and boost 23psi for a sec and then make a loud klacking noise and suddenly loss of boost and power, Engine light blinks when the klacking noise is happening, but when I let go of gas, klacking stops and engine light stop blinking and stays on steady. I plug in my OBD tool and it read codes 304, 302, 300, which is cyclinder 4 & 2 misfire and multi-cyclinder misfire, I would think its the ignition coils but ive never heard this sound before when they went bad and my car threw those codes.  Also when I boost, no smoke behind me.

My question is: If I had a blown turbo, wouldnt my codes read something else about the turbo or can a blown turbo cause the cylinder misfires??

Could it be my BOV??

And how are some ways to check if the turbo is blown??

Thank you in advance!!

Offline EURO44B6

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Re: Ways to know if your TURBO is blown??
« Reply #1 on: August 26, 2011, 10:25:58 AM »
Found the problem, it was a spark plug with a broken collar, and a melted MTC check valve. Changed and everything runs fine!!

Offline A4 Maine-iac

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Re: Ways to know if your TURBO is blown??
« Reply #2 on: August 30, 2011, 03:46:37 PM »
Just saw this..
Good deal! Would have guessed CP. Glad you got straight.