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I will double check the return line, mybe add another clamp,, something got to be wrong, , wrong size pully, pump not big enough,, gear box clogged, , or something? ?..
without being able to hear it I would speculate that it's pump cavitation . Sticking pressure relief valve , restriction in the system and excessive pump speed can all be causes of this .
11-02-2013, 08:35 PM
