My 2015 6.7 will not start. Dead engine cranking with P2291 low fuel pressure. I replaced the low pressure pump. I also found the pick up valve in the fuel sender was stuck closed. Both of those issues are now resolved. I cannot fully bleed the fuel systems no matter what I have tried the low pump still squeals and airates. I have borrowed a scanner to check things out and found I have 5000psi cranking pressure on the HPFP and about 100psi from the fuel rail sensor. Any ideas how to get this thing started? Is there a ICP sensor I can unplug? Thanks
Fuel pressure info
1 reading
MotoXman
21 - 31 of 31 Posts
Joined
·
32 Posts
What the hell was wrong with Mavis?...was there a mouse back there or something?:wink:
good news is, that's a great picture.
bad news is, that is not a minute amount. that is definitely not looking good. that fuel, along with the particles in it, are going straight into those injectors.
i'll say this; if that truck came to me, lpfp whining, low icp cranking, that in the fuel, i'm not hesitating to call a contamination kit on it. and i respect the customers money as if it were my own. not saying a pump alone won't get it running. you did say you were able to get it running with ether, so who knows. but i can't see that metal not causing any damage to the injectors
bad news is, that is not a minute amount. that is definitely not looking good. that fuel, along with the particles in it, are going straight into those injectors.
i'll say this; if that truck came to me, lpfp whining, low icp cranking, that in the fuel, i'm not hesitating to call a contamination kit on it. and i respect the customers money as if it were my own. not saying a pump alone won't get it running. you did say you were able to get it running with ether, so who knows. but i can't see that metal not causing any damage to the injectors
think about this; what does a pump cost? 2-3k? what does 8 injectors cost? 2k? that alone is about the cost of the kit. plus you get the reg, frp sensor, rails, supply/return lines, lp switch. i think ford knows that this problem is becoming somewhat slightly common, and is offering the kit at a very reasonable price to try and compensate
i would say so. from the info that you've provided.
what you could do is buy the kit, flush the system, install the hpfp, and if that works, buy another hpfp and return the kit complete. if you're gonna do that, i'd probably remove the rails and lines and flush them on the bench as well. when you have the pump out, open it up and have a look at the rollers under the pistons. see how badly the hardening has degraded.
tbh, if it were my truck, the amount of work involved with all that, i would just bite the bullet and install the kit. up to you though. like i said, not saying it won't work, but i wouldn't leave it up to chance
what you could do is buy the kit, flush the system, install the hpfp, and if that works, buy another hpfp and return the kit complete. if you're gonna do that, i'd probably remove the rails and lines and flush them on the bench as well. when you have the pump out, open it up and have a look at the rollers under the pistons. see how badly the hardening has degraded.
tbh, if it were my truck, the amount of work involved with all that, i would just bite the bullet and install the kit. up to you though. like i said, not saying it won't work, but i wouldn't leave it up to chance
we opted for the complete kit that Ford sells injectors,pump, rails etc. Thanks for the advise everyone. Cheers
Joined
·
6 Posts
I think I have the same issue, about a week or so ago I was heading home and Check Engine Light came on and showed, Low Fuel Pressure, and Reduced Engine power. So I had to have it towed to my dealer, at first they replaced the HPFP which was bad and verified, and said it was good to go. Drove less than 15 miles and the Engine Light came on again, so back to the dealer I went. This time they reset the Adaptive Fuel Strategy, and called and said it was all set for the second time. Again had truck for less than 3hrs and the Engine Light came on again, only this time when the heater was on, you got an extremely strong smell of diesel in the cab, it was so bad that it burnt your eyes and had to roll down the windows to get it to the dealer. So here it is, in the dealer for the third time within 4 days, well just heard from the dealer and was told that mechanic was at a loss and was on the phone with Ford Engineers, and so other department. They want him to tear apart the new HPFP and check for metal shaving.
I guess what makes me nervous, is that if there is metal shaving in the fuel system like they think, what kind of damage if any has been done to the inside of the engine, and other parts. Nice thing is that I have had all of the maintenance done at the Ford Dealer, and oil has been changed every 5,000 mile. So dealer did tell me whatever they find will be covered by the warranty since there is only 33,000 miles on the truck. So I guess I will have to wait until tomorrow or so to see what is found when they start tearing things apart.
I guess what makes me nervous, is that if there is metal shaving in the fuel system like they think, what kind of damage if any has been done to the inside of the engine, and other parts. Nice thing is that I have had all of the maintenance done at the Ford Dealer, and oil has been changed every 5,000 mile. So dealer did tell me whatever they find will be covered by the warranty since there is only 33,000 miles on the truck. So I guess I will have to wait until tomorrow or so to see what is found when they start tearing things apart.
21 - 31 of 31 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
