Oil & Fuel oil pump problem

[fred jr]

l-175 kubota will the oil pump stop pumping after it runs for 1 hr and the motor starts knocking, or is the oil breaking down?

 

[PHILIP8N]

I have never seen an oil pump stop working then start working again. Most of these oil pumps are gear driven off the front geartrain and are very reliable. Possible causes: low oil level, incorrect grade of oil, debris covering and uncovering pick-up screen, pick-up tube loose, sucking air on supply side of pump, worn out pump, worn out bearings, sticking oil pressure regulator, etc. Put a mechanical gauge in an oil galley and watch pressure hot and cold at various rpm's. Before this question was even asked, I would have changed oil and filter to evaluate. How many hours on this engine? How many hours since last oil change? Philip.

 

[fred jr]

Thanks a lot Philip, just know getting into the problem. Changing oil and filter is the first thing I will do.... Fred Jr.

 

[fred jr]

Thanks a lot Phillip, just now getting into the problem. First thing I will do is to change the oil and filter. fredjr..