bft blue oval boys
Active member
Sounds good dude. When you coming?
My progress/small build thread
- Thread starter bft blue oval boys
- Start date
Replaced mine at 60k....it started getting weak around 45k and I made it live another 15k before finally replacing it.
Love the setup....that thing sounds wicked.
bft blue oval boys
Active member
Here is a pass from the fender
https://youtu.be/BOqCWWS-7g8
https://youtu.be/BOqCWWS-7g8
swinky
New member
Depends on your schedule. So is it just losing pressure at upper rpms?
bft blue oval boys
Active member
Yes. I'm on 2nd doggy but I don't know what we will work this weekend
bft blue oval boys
Active member
That's supposed to say 2nd shift lol. I think I was half asleep
Platinum250Scorpion
New member
Lol, I wondered... thought maybe it was just some cool kid lingo I didn't know about. Jk
- A vet' that's gone from a 7.3 to a 6.7, tryin to gather info & help out when I can. New to the 6.7 & PSA. Please excuse my potential FNG ways.
bft blue oval boys
Active member
So would you guys try replacing the hpfp with another OEM used one? AirFish Automotive told me he has one he'd let go of for a decent price. It's off of a 2010 with 70k miles... The mileage worries me now lol
JrStroker
New member
I may have a lead on an actual new one.....
:whs:
I'll give ya $2k for it if it is brand new!!!!
When I replaced mine with the reman, the first three pumps were bad. It was a hell of an experience because after the third we kept thinking It had to be something else wrong with the truck. Finally, after doing 1 million test, we were convinced that had to be the HPFP… Turns out the 4th pumps was a charm. I would do a LP system at the same time in the hope that your HPFP will live a while.
JrStroker
New member
I'm gonna look into it and see if it's actually new or not. If it's actually new, it's mine.
So you had 4 pumps go out on you? Did it take the fuel system out each time??
swinky
New member
I really think what kills them is when they're being pushed to the limit often (like yours) so as long as it's a pump off a truck that hasn't been hot rodded you'll be alright.
johnp115
Active member
Thats what i was thinking too... Stock fuel system, big tune, many passes down the track probably played roll in it.
swinky
New member
Yeah high pressure pumps usually don't like having to pull and push. If his low pressure pump wasn't keeping up it could be causing cavitation. Cavitation=heat.
When my first started to die, I was on completely stock fuel. I do believe bad diesel was a major factor because I was hot shotting and had to buy fuel from an unknown place. About 150 miles into that tank, it started to surge. I almost couldn't get it started when I shut it off to inspect it. Being on the road with a timeline, I didn't have many options so I went to another location and filled the tank. It never acted right after that tank and slowly got worse with maintaining RP and the surge it had over 15k miles. When I finally replaced it, I did a LP system and 15% nozzles at the same time. The first HPFP wouldn't even start. After some conversations with Ford, they said send it back. The second HPFP would only build around 11k RP. Ultimately, it was sent back. The third one did almost the same thing. That is when we thought there had to be something else wrong. After more testing that I can count (over the course of several months), everything pointed to the HPFP so a 4th one was installed. Truck ran great ever since.
The LPFP could be weak, but even they generally don't appear to starve a stock HPFP. The OP could always plum a gauge into the LP system so he can know for sure. Even if the LPFP was to blame, starving a K16 (HPFP) from fuel is more likely than not going to hurt it so I would bet the HPFP would be weak by now even if the original problem was the LPFP. If I had to bet, I would say the ch#tty water separator on the LP system has caused the K16 to get weak.
swinky
New member
We're planning on running a gauge. For all we know it could be pulling air somewhere.
bft blue oval boys
Active member
Alright, I've made up my mind not to rush this and do it right. I'll just run E.T. at Rudy's and stick the drag radials on to see if it's quick enough to be competitive in 7.70.
Gonna use Jared's gauge to see what low pressure fuel is doing. If that's good then I'm just going to let it ride for a while while I gather parts again. Mary's LPFS, dual fuel, and at least 60%'s. All in favor?
Gonna use Jared's gauge to see what low pressure fuel is doing. If that's good then I'm just going to let it ride for a while while I gather parts again. Mary's LPFS, dual fuel, and at least 60%'s. All in favor?
