Changed the fuel filter today and cannot get the system primed. Anyone else have this type of problem?

Make sure the o rings are seated properly and tight.

Some have had bad priming pumps.

If all else fails pre-fill the filter on the dirty side and then reinstall it and it should start after some cranking since you already have gotten air in the lines.

Next time if you pre fill on the dirty side and replace it it will start right up and keep running

Sometimes it takes a lot of pumping after you've checked to see everything is tight and making a good seal.If you have gotten air on the pump side it will take closing the bleeder and pumping the primer untill semi hard to hard in order to push the air through.

Been there done that

I've never primed the system after a filter change.I just fill the new filter up with fuel and install.Never had to open the bleeder screw or anything.Fires right up every time.

I have seen the large o-ring pop out of positon when tightening if it hasn't been lubbed. I always use some bearing grease on the o-ring. Its "sticky" enough to stay in position and helps to seal when the filter is tightened. Hand tight, use both hands, is good enough.

Last night I changed my fuel filter to the dual pleated one, it took me about 30 minutes, hardest part was cracking loose the filter, once off absolutely no problem, from Eric's write up on how to change fuel filter, went perfectly. I have 20,000 miles on the filter, the bottome of the filter is totally clean, flawless!!!, I guess after listening to John Kneendy about using FPPF religiously, it has done it's job very well. Pictures will follow shortly, thanks!

I stretch the orings somewhat before installing as they ar a bit on the small side and tend to creep inward. If they do creep, they will get cut/pinched by the plastic ridge of the filter end plate.

I really hate to disagree with the experts but never ever fill the OEM before installing unless you have a good secondary. There are three check valves in the head to make priming easier. If your truck was running when you shut it down the inlet line from the tank and the discharge line to the LP pump will have mostly fuel in them. Might be a little vacuum (not air) on the inlet side. There is also a large check (spring loaded ball) to keep the fuel in the head from running out when you remove the filter. There is no rocket science involved. Later! Frank

I really hate to disagree with the experts but never ever fill the OEM before installing unless you have a good secondary.


And if you prefill the filter by filling it on the dirty side of the filter, which is the little holes around the outside of the filter, not the center one, what diffrence would it make as that is how the filter head and filter operate anyway?

I agree that filling it in the center hole basically bypass's the filter and puts the fuel you used to pre-fill the filter with straight into the injectors, but being carefull and filling the outside does no harm and guarantees a restart with no priming and no fuss of cranking and priming and cranking and priming.

Diesel Dragon

.

I stand corrected. By all means fill through the little dirty side holes. Later! Frank