Fuel Filters change ISC Cummins
My 2005 Cummins ISC has 2 fuel filters. One has the water sensor and drain which Cummins manual says is the suction filter and the other is the pressure filter. I changed both filters but according to...
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I have always prefilled the fuel filters as well and never had problems , but that has mostly been with heavy trucks, some of the smaller diesel do have lift pumps/ circulation pumps up to the main injector pump, and those if you cycle the key will bleed the air out before you start. We have had a few of our operators run our trucks out of fuel, and they can be a real PITA to get started again...cracking open injector lines in the middle of a snow storm is not fun...
