Sep 24, 2014 · What causes low oil pressure in a cummins isx? Top Answer. Wiki User September 24, 2014 4:22AM. Compromised oil system, faulty engine oil rifle pressure 1 sensor. Related Questions.
My 8.3 Cummins has low oil pressure at hot idle . I installed a mechanical gauge on the engine to make sure that it wasn't the dash gauge. It idles at around 8 to 10 Lbs. when hot . As soon as you bring up the idle to around 900 RPM ,it goes up to around 20 Lbs. and increases with RPM. Mar 20, 2015 · Have 600 horsepower cummins 380000 miles just had oil change start the day with 40 oil pressure but during the day oil pressure kept getting a little lower finally started pulling a load up the mountain oil pressure was down to 20 and loosing power finally got to the top and the high exhaust...
Should I take it to Cummins? You might want to have the oil pressure tested for peace of mind. There is an oil gauge anomaly on the Ram ISB where the pressure drops slightly at idle, but the Ram PCM fails to properly communicate with the Cummins Engine Computer, so the Dodge PCM indicates no pressure even though there is no problem. CUMMIN CM871 ISSUE "Engine oil rifle pressure Data Valid But Below Normal" LOW OIL Have checked main and rod bearing, check valve, oil pump, and sending unit. And the problem seem to be within the oil filter. Mar 05, 2010 · Here's an update. Talked to Cummins Filtration today at MATS. It seems that the drop in oil pressure is not unheard of. They blamed it on changes in oil formulation and ultra low sulfur fuel. The last time I changed the oil filter I'd changed from the LF3000 to a LF9009. I was told that my troubles should be over with the up-graded filter.
For Cummins generator sets, sometimes there will be a low oil pressure phenomenon, then what is the reason, how to solve it? (1) lubrication system: if oil filter is dirty, suction pipe will be blocked; will lead to hydraulic regulator failure. The oil pressure regulator is on the bottom side of the oil pump. The presure regulator on the BC1 is on the oil cooler. By mikej - Sunday, October 25, 2009 4:49 PM: Update on the cummins , they went and picked it up yesterday cold start it went 40#s took about an hour but it got down to 15#s and stayd there ,idle or 1800 no change . what do ya think. l8tr mike