In your oil pump, lube the gears up with STP or a HEAVY oil (20W-50 Amsoil Z-Rd Synthetic Motor Oil). It's why I as so curious about why it might be that high. Intake manifold pressure is determined by compressor pressure ratio or essentially turbine pressure ratio. Low Air Filter Differential Pressure Shutdown 107 1 Air Filter Differential from ENGINEERIN 4014 at University of Kentucky Temperature Warning 110 15 Low Engine. To simplify things just remember that the air motor converts the crankcase pulses to a back and forth motion. 2012 MP8, low fuel pressure, replaced fuel pump, flushed lines , still have 5-6 psi at idle, I have read in forum about regulator in front of head , to which Mack can't locate. 2019 popular Low Pressure Air Pump trends in Home Improvement, Pumps, Automobiles & Motorcycles, Inflatable Pump with Low Pressure Air Pump and Low Pressure Air Pump. Air standard diesel engine cycle: In the diesel engine, air is compressed adiabatically with a compression ratio typically between 15 and 20. No voltage to the contactor coil could be caused by a low voltage problem in the thermostat, thermostat wires, high or low-pressure safety switches (could be low on charge) or if you have a heat pump then your defrost thermostat might have a problem. The low tire pressure light, also know as the TPMS system, on your car should turn off when you have filled your tires to the proper pressure, or "PSI.