7.3 help.
Thread Starter
|
5th Wheeling
Joined: Aug 2022
Posts: 33
Likes: 2
I second Jason's hypothesis. The fuel inlet is low on the drivers side of the bowl, the return/pressure regulator is above it where the little housing is held on w/ 2 screws. If it has a bad spring or trash preventing it from closing then you'd have little to no pressure unless you capped it off with say a pressure gauge.
I don't even know what to try anymore.
Thread Starter
|
5th Wheeling
Joined: Aug 2022
Posts: 33
Likes: 2
I have the forscan reader. Tomorrow I will check that. I agree the fuel isn’t getting to where it needs to. I get no white smoke.. is the hpop replacement a big job?
Cargo Master
Joined: Apr 2022
Posts: 3,201
Likes: 1,704
No it's not bad. But don't chalk it up to a bad hpop yet. Need to read the info first to diagnose it. Could very well possible be a bad ipr. There another common problem with them. But got to see what the computers reading first before firing the parts cannon at it.
Lead Driver
Joined: Jul 2017
Posts: 6,862
Likes: 2,335
From: WV
Originally Posted by Muteme87
I replaced the fuel regulator spring and housing. That didn't fix it. I just bought 2 new batteries just so I could fs rule that out.
Originally Posted by Muteme87
ok i replaced the housing and spring. With the key on just a small stream of fuel is coming out . It sounds like it's under pressure coming out. That's what I went right? If so that didn't fix it.
I don't even know what to try anymore.
I don't even know what to try anymore.
Were we correct in where you had the gauge plumbed? Top drivers side fitting?
I would not expect fuel to trickle out but have never tried with it disconnected to see how much flow is on the return line.
I would test the pressure like described in this link. https://www.ford-trucks.com/forums/a...4&d=1592859516
Cargo Master
Joined: Apr 2022
Posts: 3,201
Likes: 1,704
Another quick easy way to check and see if it has any kind of fuel pressure is just crack the drain open right when you switch key on. If it just runs out it ain't go any pressure. If it sprays out and makes a mess on the ground then it should have enough pressure to atleast start. That's what I always do first for the quickest check without a gauge.
Thread Starter
|
5th Wheeling
Joined: Aug 2022
Posts: 33
Likes: 2
Idk how to check my hpop on forscan app. Nothing named hpop or high pressure.
Cargo Master
Joined: Apr 2022
Posts: 3,201
Likes: 1,704
"Icp psi" . That's your hpop psi.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Thread Starter
|
5th Wheeling
Joined: Aug 2022
Posts: 33
Likes: 2
Another quick easy way to check and see if it has any kind of fuel pressure is just crack the drain open right when you switch key on. If it just runs out it ain't go any pressure. If it sprays out and makes a mess on the ground then it should have enough pressure to atleast start. That's what I always do first for the quickest check without a gauge.
Lead Driver
Joined: Jul 2017
Posts: 6,862
Likes: 2,335
From: WV
If it started and ran fine while the fuel pressure return was blocked with the gauge then your issues should not be related to HPOP. That would point to low fuel pressure due to the FPR.
Please see my questions above if you missed that post.
If nothing else I would at least confirm your test over and see if it starts up and runs again like before. But first I’d do the fuel pressure test a different way like the one linked above.
Edit: your post above came in while I was typing. So it does spray out hard when cracking the fuel bowl drain? Hmmm. Strange indeed.
Please see my questions above if you missed that post.
If nothing else I would at least confirm your test over and see if it starts up and runs again like before. But first I’d do the fuel pressure test a different way like the one linked above.
Edit: your post above came in while I was typing. So it does spray out hard when cracking the fuel bowl drain? Hmmm. Strange indeed.
Thread Starter
|
5th Wheeling
Joined: Aug 2022
Posts: 33
Likes: 2
If it started and ran fine while the fuel pressure return was blocked with the gauge then your issues should not be related to HPOP. That would point to low fuel pressure due to the FPR.
Please see my questions above if you missed that post.
If nothing else I would at least confirm your test over and see if it starts up and runs again like before. But first I’d do the fuel pressure test a different way like the one linked above.
Edit: your post above came in while I was typing. So it does spray out hard when cracking the fuel bowl drain? Hmmm. Strange indeed.
Please see my questions above if you missed that post.
If nothing else I would at least confirm your test over and see if it starts up and runs again like before. But first I’d do the fuel pressure test a different way like the one linked above.
Edit: your post above came in while I was typing. So it does spray out hard when cracking the fuel bowl drain? Hmmm. Strange indeed.
Thread Starter
|
5th Wheeling
Joined: Aug 2022
Posts: 33
Likes: 2
would you say the pcm is good since the buzz test went good?
I already replaced the injector computer. I really don't want to replace a good pcm but I'm running out of options.