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Dodge Cummins and Ford Power Stroke Diesel Truck Accessories - Geno's Garage

Good stuff over at Geno's but I was just readin in an older post where someone was sayin that you had to notch the filter cap since the new requirement for the 7micron filters, that make any sense?

I have never heard of having to notch anything as far as fuel filters go.

I know we've kinda been all over the place on this thread but back to my original subject: the CEL. I cleared the P0191 code and put about 120 miles on today with no light and no problems. Must have just picked up the code after I changed the fuel filter.:U:

mine throws that code too when i turn on the defueling setting on my bullydog. i think the computer is sensing a change in fuel rail pressure cuz your computer is telling it to send more fuel than the stock fuel pump can keep up with. i wouldn't worry about it too much if you keep it off the floor, but might want to look into a aftermarket fuel pump to be safe.

My 04.5 threw a code at me and began acting up. It was kind of random at first but got worse. It would cough and sputter and smoke like hell at startup and die half the time. Sometimes die after restart ot need to be cranked a lot. I replaced the fuel filer and the problem got better but persisted to a lesser degree. The problem went away in a couple weeks after that. I had just bought the truck and the previous owner didnt maintain it like he said he did, filter was black