F5C Fuel System - Rail Pressure Is Not Reducing When High Pressure Pump Is At Minimum Flow. Check Metering Unit Circuit, Low Pressure Fuel Tubes (Return From Pump To Tank Clogged). Red
Cylinder 3 BIP Search Failure -Too Many Unsuccessful Searches - Rail Pressure Negative Deviation too High on Minimum Metering
One sign to move on is intensive Simpson Jumbo engine work, such as needing new pistons and injectors. If you hear loud clunking sounds from the engine, it could be due to the starter hitting the flywheel or a piston piercing the engine block, which can indicate a seized engine. Farmers encountering these problems have coined the saying: If your engine is knockin you better be shoppin.