ISL not performing
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 die...
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Fuel filters changed and the problem started. I'd start by taking them off... should be fairly hard but you can with your hands. If it turns easily, stop and tighten it up as it was not put on tight enough. If hard, then make sure the small rubber seal is on the threaded shaft that the filter screws on to or on the top of the filter. If missing, buy another filter and use the seal from it and on the next filter change. While off, dump the fuel into a pan and see what it looks like.
You prime the fuel system by turn the key on for 30 seconds and off several times. You do not have to put fuel in the filters before putting on unlike on a Cat engine.
You prime the fuel system by turn the key on for 30 seconds and off several times. You do not have to put fuel in the filters before putting on unlike on a Cat engine.
