Those with an electric fuel pump also have a oil pressure safety switch, a switch that stops flow of fuel if the oil pressure drops below a set value. I have a few questions - not that I am having difficulty myself - just curious
Would not the engine get real noisy if the oil pump failed, and would that noise not be sufficient alarm to shut down and investigate - OPSS or not?
My old neighbor had a 50s vintage Massey Furgeson tractor that ran nice and quiet for 20 years at 5 psig oil pressure. Similar type engine to the atomic four. At what oil pressure does the A4 start to make noise?
Best,
Jim
- At what oil pressure does the switch activate?
- Has anyone ever had this switch activate?
- If you check the oil regularly, and have no leaks - what are the chances of the oil pressure dropping to activate this switch?
- Since these switches seem to be problematic, is there a real concern with bypassing them?
Would not the engine get real noisy if the oil pump failed, and would that noise not be sufficient alarm to shut down and investigate - OPSS or not?
My old neighbor had a 50s vintage Massey Furgeson tractor that ran nice and quiet for 20 years at 5 psig oil pressure. Similar type engine to the atomic four. At what oil pressure does the A4 start to make noise?
Best,
Jim
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