OK you diesel experts, here's what's going on. I have a 400HP Cummins ISL in a 2005 Itasca Horizon motor home. I've had this coach for 3 years and it's performed flawlessly. Last winter I had a diesel guy in our RV park change the oil and all the ...
Both NAPA filters looked OK when we took them off and nothing untold came out when we dumped their contents into a pan. They did have slightly different "o rings" or seals (the loose ones that come in the package), but otherwise looked pretty simila...
OK, changed out the Napa fuel and fuel/water filters this evening for the correct Fleetguard ones and all seems back to normal. Went for a 20 mile ride and the engine pulls like it used to and the transmission now shifts up over 2K, where it used to....
I want to thank all of you for your thoughts on what might be causing the lack of performance with my coach. I too leaning towards a fuel delivery issue, but I have no hands-on experience with diesel engines. Just to address a couple of the question...
