F5C Injector Codes Are Invalid - Write Correct Injector Codes With Service Tool (Cyl.2). Engine
One sign to move on is intensive Minneapolis 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.