Change in engine tone - TDR Roundtable

Change in engine tone

03-07-2005, 02:06 AM

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dan brooks

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Join Date: Sep 2002 Location: Tucson, Arizona Posts: 626 Old Reader's Rigs Gallery

Change in engine tone

I've noticed something strange over the past couple days. After starting the truck the first time each day or after getting off work, for the first several minutes the engine tone will change - it almost sounds like the KSB is kicking on and off (rattle gets much louder, then quiets down). Once the engine is up to operating temperature it seems to be normal. Haven't noticed any difference in performance of fuel mileage.

Any ideas?

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