Fuel Filter Swap Question
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Fuel Filter Swap Question
Last night I changed the fuel filters on my 08 F250 w/ 35,000 miles. I ordered the new style (4617) filters from the dieselfilters.com. I noticed that the frame rail filter that I installed was a little different (longer flange) than the one I removed.
I also noticed that when I removed both caps they had been screwed tight/flush to the filter housing body, and were pretty tough to removed. When I reinstalled the caps I torqued them to the recommended spec, but they were anywhere near being seated against the filter housing. I've checked them a couple of times since for leaks and they seem to be fine. Should I be concerned?
I also noticed that when I removed both caps they had been screwed tight/flush to the filter housing body, and were pretty tough to removed. When I reinstalled the caps I torqued them to the recommended spec, but they were anywhere near being seated against the filter housing. I've checked them a couple of times since for leaks and they seem to be fine. Should I be concerned?
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From: Frederick, MD
Did you put fresh oil on the new o-rings you installed on the caps?
For both of them I would be concerned the fuel will by-pass the filter and go thru the system un-filtered. I think I would take them out again and inspect.
For both of them I would be concerned the fuel will by-pass the filter and go thru the system un-filtered. I think I would take them out again and inspect.
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Yes, fresh oil on the o-rings. You are saying that the caps should screw in all the way to the housing without much resistance, and that the cap should be torqued when its fully seated against the housing? Mine have a bit of a gap.
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From: Frederick, MD
Yes, they screw all the way down. Take them off, do the engine one first since you won't get a bath and see if you can determine if something is wrong. But yes I should seat against the housing.
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Yes make sure they are seated flush or the fuel will bypass the filter. I just changed mine this morning place small amount of oil on the O-ring I also put small amount on the threads. This will help eliminate some of the friction between the metal threads and whatever material the cap is made, if yours was like mine it squeeked all the way out a little oil will work wonders.
