John Deere 7810 Tractor, 8.1L In-Frame Head and Cam Repairs
Initial Problem Our 1998 John Deere 7810 was having poor engine performance and experiencing rough idle. With approximately 7000 hours, we initially suspected bad injectors. The old injectors were pulled and tested and showed they needed replacement. We replaced all six but there was only minor improvement in engine performance. We speculated that there were problems with the injector pump and planned to fix the issue after early season plowing and planting was complete. We u