Injector orings
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
Buy a pack from the Ford dealer, about $6. Then you can measure them so there isn't a mistake.
Are you looking to just replace that one o-ring? Pretty cheap parts really, one of those parts you don't want to be wrong!
Are you looking to just replace that one o-ring? Pretty cheap parts really, one of those parts you don't want to be wrong!
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
I don't know that the Ford kit has any internal o-rings for the lower housing?
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Randy he has the injector apart and needs internal stuff.
That is not in the Ford kit.
Do you still have the old one? I would take it into a
hydraulic shop and see if they can match it up with something.
Your other opting is to check out Ebay or any of the injector
"rebuilders" and see if someone will sell you what you need.
That is not in the Ford kit.
Do you still have the old one? I would take it into a
hydraulic shop and see if they can match it up with something.
Your other opting is to check out Ebay or any of the injector
"rebuilders" and see if someone will sell you what you need.
Thread Starter
|
Elder User
Joined: Apr 2009
Posts: 559
Likes: 0
From: Franklin, Georgia
So my full time job is industrial maintenance at a manufacturing plant. I went looking through our orings and found some that looked close.
I'm not sure if the size yet but I did find one that matched. I will get a size and post up for future reference.
Some of you may remember some of my post the past few months with my Miss I had that I couldn't pinpoint to a cylinder and then the minor runaway situation I had. Well I drained the oil out and got well over 20 quarts out and it was thin as crap. So obvious fuel diluted. So I replaced all outer orings and copper washers. Installed the injectors and turned on pump with oil drain plug removed and after a minute I had fuel running out of the oil drain. So I removed injectors and replaced the internal orings and copper washers and that sealed it up.
I believe the internal leaks in the injectors caused a low fuel pressure situation and was causing the miss. I will finish putting truck back together Thursday and see what's going to happen.
I'm not sure if the size yet but I did find one that matched. I will get a size and post up for future reference.
Some of you may remember some of my post the past few months with my Miss I had that I couldn't pinpoint to a cylinder and then the minor runaway situation I had. Well I drained the oil out and got well over 20 quarts out and it was thin as crap. So obvious fuel diluted. So I replaced all outer orings and copper washers. Installed the injectors and turned on pump with oil drain plug removed and after a minute I had fuel running out of the oil drain. So I removed injectors and replaced the internal orings and copper washers and that sealed it up.
I believe the internal leaks in the injectors caused a low fuel pressure situation and was causing the miss. I will finish putting truck back together Thursday and see what's going to happen.
Thread Starter
|
Elder User
Joined: Apr 2009
Posts: 559
Likes: 0
From: Franklin, Georgia
I also wanted to make sure I used a good quality oring as well. I believe viton 90 or BUNA-N are good for this. Anyone object?
Trending Topics
Thread Starter
|
Elder User
Joined: Apr 2009
Posts: 559
Likes: 0
From: Franklin, Georgia
The way I traced it to the internal orings is by covering two of the fuel inlet ports with my fingers and using 10psi of air with a blow gun with rubber tip I blew air into the third inlet and bam I saw the fuel followed by bubbles coming from the top of the housing. After I replaced the oring I air tested again and it was good. So installed it back in.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
That said 10 psi in not squat when you consider what they normally run at.
If it works for you goose then good on ya! You might be breaking new ground here.
Thread Starter
|
Elder User
Joined: Apr 2009
Posts: 559
Likes: 0
From: Franklin, Georgia
Checking it with air definitely showed me it was leaking. I regulated the air to 10 psi so I could hold my fingers over the other two ports. After the new oring was installed and checked again there was no leakage.
I promise to have a size of the oring for y'all tomorrow. I also don't some other things with the internals which I'm not going to spread around just yet. I want to see the outcome first before I do.
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
Was it leaking out the top of the injector? Could you see the fuel leaking with pump running?
I'm asking because I recently did injector seals, top seal and nipple cups and now, 5000 miles later, I've got a leak again... oil pan has a few quarts to many.
I'm asking because I recently did injector seals, top seal and nipple cups and now, 5000 miles later, I've got a leak again... oil pan has a few quarts to many.