Hello everyone. I am a relatively new truck owner. I have owned a 1998 International 9400 for about a year. It has a Cummins N14 tuned to 525 hp. Within the last month or so i have noticed a drop in oil pressure. It normally ran at 35-38 psi at 1500 rpm. And now it’s about 30-33 psi at 1500 rpm. I change oil every 14,000-16,000 miles and send in oil samples. All of the oil samples have come good stating no action is needed. I check oil every morning before start up and during that time smell it and feel it to see if any other fluids are entering the oil. I don’t know how many miles is on this motor, the only number i have sure of is it has at least 300,000 on it. I am wondering if this is something i should be worried about and should be taking actions to figure out? And what could possibly be the cause of this? Thank you!!
N14 Oil Pressure
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 21blaumeyer, Apr 11, 2024.
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