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Old 07-17-2013
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Re: Yanmar Oil Pressure Pegged

It's almost sure to be the pressure sender. My engine starts at 45 psi cold and when hot drops to nothing. A little rev up and it goes back up and stays then drops again and so it fluctuates.

I have driven for hours with the gauge just above zero and the proof for me that it's the sender is that the buzzer works off a different sender and even when pressure is effectively zero, the buzzer doesn't go off and the engine runs just fine.

I'll get round to a new sender one day . . . .
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