I changed the fuel filters on the '16'. This is the second time in 60k miles, I know the should be done more often than at 30k mile intervals. My bad .
Drained some fuel into a glass container...clean as clean can be no water or debris. Inside the filter bowl no debris of any kind, nice and clean.

After putting new filters in did the pump prime 7 times 30 seconds. Long crank no start, so did the prime again 6 times 30 seconds this time it started than died. Tried again it fired over let it run for a few minutes and then shut it down. Did the oil change on my 7.3 and came back to make sure the 6.7 would turnover, it hesitated with a longer than norm crank but stayed running. Took it for a short 5 mile run just to make sure that there was no more air in the system which I believe took care of it. Truck sat for an hour then tried to start it and it did fire right over.

This is my probably my only hesitation of changing the filters is that it won't fire over after a change.

Thinking about the last time I changed the filters I believe I did the prime 12 times at 30 seconds and it fired right over with no hesitation and ran perfectly.

I guess I'll see in another 2 years.

 

I changed my filters a couple of weeks ago and cycled the pump 12 times based on Dave's practice and the engine may have turned over a little more than normal, but fired up just like it always does, but I never had my engine die on me.

Sure you don't have one of those Chinese counterfeit filters?

 

I bought them from Amazon about a 1.5 years ago and had them stored in the 5th wheel. They looked identical to the old ones and the o ring was even in its own sealed lightly oiled bag. So I don't think so, but....

I'll make sure in the morning after sitting all night that it fires up. Next time it's 12 primes. Nothing wrong with "overkill".

 

I key on and let it sit listening to the pump. when the buzz stops, recycle the key to the on.

I do it about 6 times. So seconds I don't know. I let it buzz till it stops.

No issues and no long crank.

 

Not sure why it did what it did but the truck fired right up this morning, everything seem to be ok. It's such an easy task but the moment of truth after priming gets me nervous with possible air in the system. Oh well till the next change.

 

The first time I did a fuel filter set change at the OEM recommended change interval of at the 3rd oil change or by 22.5k miles, I didn't like the long crank either, made me real nervous... so I believe it was then I decided to go at least double the priming cycles to be sure... I do remember this last change of the engine just firing right up when I did the fuel filter change with the oil change this past January. I will say, from my notes, after I installed the S&S DPK, I primed the system at least 15 times with the wife in the truck doing the KOEOff cycles as I watched the SNAPP filter, it seemed there was still a little air moving with in the filter but she started right up. The truck's been running great, no leaks and the Rudy's pipe couplers haven't slipped since the good cleaning followed by the wife's hair spray application as recommended here.

Never had the engine die on me either... I'm going to post the comparison pics of the counterfeit set and Motorcraft set soon...

 

Good to hear... yeah that makes me nervous too with an extended crank after a filter change.

 

Well....I was going to take the dually out to the store, got about 3 miles and "low fuel pressure" displayed on the dash. The only thing I did was replaced filters. ​​

I can hear the pump running countinously,, " if" the filter housing under the truck wasn't tightened all the way could it be getting air in there? But if was the case wouldn't there be fuel leaking there? The reason I ask is I was afraid to overtighten that housing and it was getting tight but when I was putting the metal shield on I had to turn in the loose direction just a 1/4 inch so the drain **** wouldn't block the metal bracket. Thinking now I wonder if it isn't tight enough? Still worried about breaking the plastic housing.

I'm going to Ford tomorrow and buy the fuel filters and do it again. Would fake fuel filters cause low fuel pressure?

Aghhh....

 

i dont think you got it on completely.

 

I had to run to town with the other truck. When I get back I'll put the socket on it and see if I'm 1/2 to 1 turn short.

 

I would back off the cap a little and then tighten until you feel a hard stop. If your cap is currently on the hard stop and you continue to try to tighten it you may break the cap.

 

I was 1 turn to short. If the water separator drain is sitting at the 3 o'clock position the housing made a complete turn to where the drain was back at the 3 o'clock position again and could feel the hard stop. I don't hear the pump running now either like it was when the low fuel pressure warning showed. Hopefully it was just my fear of over tightening the housing and under tightened it causing it to do the low pressure.

Took it down the road and got it up speed with no warnings showing.

Thanks all for the help.

 

the best fix is the self fix.

 

When I changed the filters on my 19, you could hear the gurgling. Took at least a dozen key cycles before it quit gurgling.

 

If you're ever nervous about overtightening it, you can shine a flashlight up there, where the stop of the cap meets the stop of the housing and look before you think you're done or if it's not close enough, you'll see they are not right next to each other. I also read here before to use fresh engine oil on the new O-ring and cap threads. That makes it turn much easier and to feel when the two stops meet up.