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Old 08-04-2005, 10:48 AM   #10
behind blue eyes
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Join Date: Mar 2005
Location: CT
Posts: 169
My Ride: 328i
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sometime at idle i get a knocking sound from the engine compartment usually..its very intermittent it comes and goes, seemingly with no regularity,the car is a 328i and its got 90,000 on it very good condition very well maintained, im wondering if the water pump is going? no leaking coolant that i can see,normal operating temps, but occasional knocking that isnt loud like engine knock and it comes and goes so its not like my motors about to go, it hasnt happend in like 1 month and yesterday it happend again wonder if the bearing in the pump are shot... No obvious clues, can someone shed some light and let me know more about the sound that a failed waterpump would emit. thanks-
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