Fuel filter change

I've never prefilled the filters on my 04 ISL engine... per Cummin. After turning the key on you should be able to hear the lift pump run for proximately 30 seconds before it shuts off.... go back and listen. Cycling the key three times... 1.5 minutes will fill the filters and get all the air out. Never had it not crank right up and continue to run. Not having to prefilled comes in handy when you do it on the side of the road.

I have done it both ways. Pre-fill and you will have no problems. The last time I did not have fuel available to pre-fill so I did the key cycle. I cycled it three times and it started right up then died. Cycled it a couple more times and it started after cranking for about 45 seconds. It ran fine after that. Like I said, pre-fill if you can. Years ago when I drove a semi we pre-filled with transmission fluid. That's what the boss told us to do and it seemed to work fine.

I pre-filled for several years then read where I should not be doing this. Next time I changed filters I did the key cycle like they said. Took me two days to to finally get my coach running. Pre-fill through the small holes and avoid the problems. I know several people will tell you they have never had a problem but odds are it is just a matter of time.