Stock fuel filter screw on cover

[B.G. Smith]

06 3500, anyone ever had the fuel filter cover unscrew enough to cause it to leak?

 

[Ozymandias]

No

 

[Darkbloodmon]

Never

 

[Topzide]

Sounds like o-ring got nicked on the filter change. If cap was installed and tightened, it shouldn't back off at all. The o-ring not only seals but helps like a lock washer. Hope you can find out what caused it to loosen up on you.

 

[bcbender]

To add to that comment, it is possible to crack the resin cover if over tightened.

 

[B.G. Smith]

As fine as the threads are I doubted it possible? It did start to leak and has about 10,000 miles on filter. I must have turned it 3/4 of a turn till it got tight. Haven't driven truck since. I am going to go ahead and change the filter and look at the cover real close. Thanks for the replies.

 

[B.G. Smith]

Well, I changed the filter, put cap on and tightened as tight I thought was good and I could still see the "O" ring, tightened some more, looks good. Guess I was fortunate it failed at home. (It didn't fail, I just failed to tighten it right the last time.) The filter housing is kind of like the low side port on the AC as far as access. With a little more engineering they both could have been made inaccessible.

 

[User113]

Use a torque wrench. 25 ft. lbs.

 

[bcbender]

I noticed the new 6.7 has the torque spec moulded onto the lid...

 

[Ozymandias]

I never ever torque that lid, just snug and it's fine.