How many times does it take to manually prime after a fuel filter change? I swear I have pushed that pump 200 times and I am not gettting fluid coming out at the bleeder.

Try closing the bleeder and pushing the plunger..It should get very hard if not impossible to push after 10-30 pumps.
If it doesn't, you have a leak somewhere.

make sure you have the filter tight or the pump will only pull air

How many times does it take to manually prime after a fuel filter change? I swear I have pushed that pump 200 times and I am not gettting fluid coming out at the bleeder.

If you ran the truck COMPLETELY out of diesel, try leaving the fuel filler cap unscrewed from the neck while pumping.

I tired all your suggestions and still no luck. I bought this truck used, wonder if the priming pump does not work? I pull the new filter back off and it is still dry, I assume priming should fill the filter as it pressurized the system. Here I thought this would be an easy and quick project.

Are the replacement O rings in good shape? Is the water sensor installed properly so air will not leak? Have you filled the filter with fuel prior to installing? Is the bleed screw/housing cracked?

I even tried putting the old filter back on with the new o-rings and still no luck......

Are the replacement O rings in good shape? Is the water sensor installed properly so air will not leak? Have you filled the filter with fuel prior to installing? Is the bleed screw/housing cracked?

Don't fill the filter. It is very hard to keep the unfiltered fuel out of the center.

If the o-rings are in good shape, every thing is on correctly, then the most obvious thing is that the pump is broken. It has been known to happen.

Jim

Thanks for all the advice, still no luck. I guess I will head to the dealer and see about replacing the priming pump.

This may not help but it happened to me. I just loosened the bleeder screw and pumped for a long time. Finally I pulled the bleeder screw all the way out and it primed in about 20 pumps. A friend of mine ran his 04 LB7 out of fuel, we put in 5 gallons. It was about 10 degrees out and the wind was blowing, and it was my first time to prime a Duramax.

If it won't pull...then push it!

Mine did this once (summer 2004) and I could not prime it to save my life. I cut a tennis ball in half and drilled a tiny hole in it...just big enough to fit a ball needle (used for airing up a basketball or soccer ball). Remove your "gas" cap and place the half tennis ball over the filler neck (I flipped the tennis ball inside out to keep any fuzzies from dropping in) with needle positioned like you are going to fill up your tank. Use an air compressor to pump air into the tank which will push fuel thru the system. Be sure your bleeder is loose, but not off! If it is off you spray fuel several feet in the air! I hate to say I speak from experience here!

This worked for me. I have not had any issues bleeding other than this one time. I have 108K changing my fuel filter about every 15K.

HMM. This gets me thinking. Maybe a cracked or loose gas cap? Would this cause the pump to be unable to generate a vacuum in the gas tank? Just digging to help.

HMM. This gets me thinking. Maybe a cracked or loose gas cap? Would this cause the pump to be unable to generate a vacuum in the gas tank? Just digging to help.

No, as mentioned before this would actually help. For any fuel that leaves the tank, air must replace that volume. Otherwise a vacuum would exist in the tank making it harder to pull out of.

I'm kind of partial to the "force feed" idea that Silver Bullet has mentioned.



Gary

If you put air into your tank be very carefull. I did this trick with a gasser once and ended up getting soaked with fuel. A little air goes a long way. No more than a couple psi in the tank should do it.

Read post #3.

http://dieselplace.com/forum/showthread.php?t=32641

Idahofox

Update, I am back in business. I took the filter off and on another 3 times and also pulled the top of the priming pump, checked the orings and put it back together. I was then able to prime it like it should have done the first time. Then I could hear the air being released from the fuel filter assembly and I would lose the prime, worse the longer it sat being starting again. I took the truck into the dealer and they replace the entire fuel filter hosing, saying it was defective. It was covered under the 100K warrantly so I was only out $100 bucks. When I asked at the parts counter, that filter housing sells for $718.

Thanks again for everyone's suggestions.

You can prime with a lift pump and manuel switch for sure. :)

This worked for me. I have not had any issues bleeding other than this one time. I have 108K changing my fuel filter about every 15K.

If you put the filter back on tight!!!! :D

Sorry Stevo...I just couldn't resist!

MaxRock

Whoda thunk the perfect oil, oil filter, and fuel filter change (not a drop spilled of anything!) would end up on the side of the North Dallas Tollroad in rush hour traffic suckin' air 2 days later!!!

D'oh!!! :eek:

Sounds like the gasket isn't set right. Try putting a little real tbick grease on the gasket to hold it in place when putting the filter on. Also fill the filter almost full with fuel before installing it. Good luck.