Join Date: May 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 . . . .
Would you care to bet an engine on that? I did and lost...
It is good to learn from your mistakes, but much better to learn from the mistakes of others...