2250 Dreaded Fuel PUMP

[JimT]

(10-18-2020 )DVT873 Wrote:  How far back does the fuel pump issue go? Is it 2250 only?

Started with the switch to the high pressure common rail in the 2250, includes 2350 and most likely the current X15. As far as I understand it's all the same pump design, just the X15 isolates the oil circuit so when it fails it doesn't take out the rest of the engine.

OP: You're obviously working to find the source of the pressure loss, no real suggestions beyond the troubleshooting you're already working on. But beyond that, you (or the customer) need to consider the extended damage from the metal in the oil. Besides the fuel pump you have the oil cooler which can get plugged up. The overhead cam and rockers. The main bearings. Piston cooling nozzles. All the oil passages through the head/block, rods, etc... Also inspect the front gears as that's were the contaminated oil goes first.