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Mercruiser MCM 5.0L MPI diagnostic code help needed

Hi all- We have a 2002 Starcraft 23' cuddy with a Mercruiser MCM 5.0L MPI 8 cylinder engine. I have started hearing pairs of high frequency squeals every couple of minutes while under way that occur regardless of engine speed, including idle. Can someone explain what this means? I have checked all my fluids, and they are fine. Could it be clogged water intake? We have it in Greenwood Lake, NY, which has a weed problem in its southern (NJ) half..however, we stay on the NY side, where the water depth is less troublesome. Thanks for any help - you may e-mail directly (as well) to antons@optonline.net. anton
contour
Aug 9
2006
Bad alternator belt? Vacuum leak? CalifBill
Aug 10
   

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