Weird whistle - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 12-02-2008, 08:35 PM Thread Starter
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Weird whistle

Lately my truck has had a very high pitch whistle sound when it idles. It is coming from the front were the engine is. what could the problem be? Could it be a blown head gasket?

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post #2 of 3 Old 12-02-2008, 08:37 PM
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I would check the water pump and belt tension pulley.

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2005 6.0 Crew Cab Long Box Lariat, current truck

2004 6.0 destroyed by contaminated fuel

2002 7.3L burnt
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post #3 of 3 Old 12-02-2008, 08:38 PM
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Other then the normal kind of whistle from a possible boost leak the common place on a 6.0 to develop a weird whistle is the overflow jug cap. If its been over heated or the headgaskets are starting to go and put pressure in the jug it can distort and cause a whistle. Most of the time you can get it to stop by putting a new cap on but that just covers it up till that cap goes bad. Just a possibility.
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