LOUD EXHAUST ? NOISES WHEN LETING OFF THE ACCELERATOR - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 10-09-2012, 07:42 PM Thread Starter
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LOUD EXHAUST ? NOISES WHEN LETING OFF THE ACCELERATOR

INTERMITTENT WOSHING OR ALLMOST GINDING SOUNDS WHEN YOU LET OFF THE ACCELERATOR. MY TURBO ALWAYS STARTS SCREAMING AFTER A 1-2 MINUTE CLIMB. ANY ANSWERS OR SUGESTIONS ON THAT NOISE?
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post #2 of 2 Old 10-09-2012, 10:21 PM
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Well the 6.0 will squak if you let off the throttle quickly at the right rpm,s its the turbo backpressure getting forced through the intake. Aftermarket air filters can make it a bit worse.
Also sticking vanes/unison ring will make it happen more often and harsher.


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