Very useful information i have one small problem from the frnot injection i have an extra line running towards the middle from to some square block thats leaking feul didnt see it on this section of video.
You just unscrew the nut on the steel fuel line at each injector and the plastic tees pop right off. The fuel lines are pretty stiff, so you need one hand to hold it out of the way while you get the tee off the injector. If you're talking about the o-rings, any sharp point will do. I used a hook that looks like something a dentist uses. A set of hooks is really cheap at harbor freight.
@@stevel6220 sick cheers man. I used a corkscrew to get the old o-rings off. The plastic tees we're just really old and on there and I was worried about breaking them with sheer force.~ Thanks for the reply.
What about the copper washers that come in the kit? My kit came with 10 total so I’m assuming one goes either on top or bottom of each plastic adapter??
I think those are for the injector itself, so unless your replacing your injectors as well as the return lines you shouldn't need them. Though i may be mistaken, I haven't done mine yet.
I don't know why it would come with 10 instead of just 8 though. You might want to find out for certain. EDIT: I just checked, they are for the injectors so you shouldn't need them
Champ_223 I don’t know, it looks like the copper washer is just above the top o-ring in the video, the kit I bought says it’s just the fuel line return replacement kit, and there are 10 washers and 10 plastic fittings, but only 8 injectors, I’m thinking there’s one per fitting....
It's been a while, and my memory isn't perfect, but I don't remember any copper washers. There was no washer above the o-rings there, that is solid steel and part of the injector body. If you look closely at the injector, you will see the small hole...that is what the o-rings are isolating. The high pressure fuel comes into the top of the injector through the steel line. because that is a flare fitting, there is no washer involved. The low pressure return lines are sealed by the o-rings. I haven't replaced the injectors themselves on this truck, but it would not surprise me at all to find copper washers under them.
Steve L Did you replace the plastic fittings also? At this point I believe I ordered the wrong kit, I have four 90 degree fittings, and six straight through, but my engine requires three 90s, four straight through, and one that dead ends. The description said for ford/navistar 7.3 IDI Turbo, but this can’t be correct... Thank you for your help anyway
No, the system is self bleeding. The lift pump moves way more fuel than the engine consumes, so it it a complete circuit of supply and return from the tank. Any air in the system ends up in the tank pretty quickly.
Can someone recommend a particular o ring? i bought a large kit f o rings (probably like 40 different sizes) and the 111 feels too loose but the size under it 110 is too small. I think they are just cheap but wanted to get some recommendations as I don't need the entire kit. I only have one injector seeping fuel. Looks to be a cut o ring. Cheers!
I recently had to replace o-rings on a few injectors because they got brittle and cracked (I think it's because I didn't drain water from the fuel filter for too long a time). I didn't feel like spending all day searching for the right o-rings, so I just bought another kit. It was fairly cheap and now I have plenty of spare parts.
Im new to the diesel world, is the fuel return line also called a fuel rail? I'm trying to located on this idi I'm gonna buy and I have to put seals on the fuel rails
These trucks don't have a fuel rail. Each injector has a line going directly to it from the injector pump assembly. A fuel rail is like a header that goes on a line of injectors. It usually snaps on to the injectors and has a low profile to save space on top of the block. I could see where maybe someone might refer to the return line as a rail, but that's not good use of terminology in my opinion. I've never had a newer diesel. Fuel rails may be used on them now, but I don't know. It's probably a lot cheaper to mass produce than the network of steel lines, but I don't know how a rail could handle the pressure of a diesel injection pump.
Very useful information i have one small problem from the frnot injection i have an extra line running towards the middle from to some square block thats leaking feul didnt see it on this section of video.
Exactly what I needed man! My idi just started leaking last week from the same area. Guess I got something to do next weekend
Thanks for the vid!
I busted one of the plastic tips for the hose, will come back and watch again once I get the part
I wish you showed us how to take the old ones off as well. But thanks for the tutorial
You just unscrew the nut on the steel fuel line at each injector and the plastic tees pop right off. The fuel lines are pretty stiff, so you need one hand to hold it out of the way while you get the tee off the injector.
If you're talking about the o-rings, any sharp point will do. I used a hook that looks like something a dentist uses. A set of hooks is really cheap at harbor freight.
@@stevel6220 sick cheers man. I used a corkscrew to get the old o-rings off. The plastic tees we're just really old and on there and I was worried about breaking them with sheer force.~
Thanks for the reply.
@@AFogel415 corkscrew... brilliant!
Do you have a video on trans line replacement
What about the copper washers that come in the kit? My kit came with 10 total so I’m assuming one goes either on top or bottom of each plastic adapter??
I think those are for the injector itself, so unless your replacing your injectors as well as the return lines you shouldn't need them. Though i may be mistaken, I haven't done mine yet.
I don't know why it would come with 10 instead of just 8 though. You might want to find out for certain.
EDIT: I just checked, they are for the injectors so you shouldn't need them
Champ_223 I don’t know, it looks like the copper washer is just above the top o-ring in the video, the kit I bought says it’s just the fuel line
return replacement kit, and there are 10 washers and 10 plastic fittings, but only 8 injectors, I’m thinking there’s one per fitting....
It's been a while, and my memory isn't perfect, but I don't remember any copper washers. There was no washer above the o-rings there, that is solid steel and part of the injector body.
If you look closely at the injector, you will see the small hole...that is what the o-rings are isolating. The high pressure fuel comes into the top of the injector through the steel line. because that is a flare fitting, there is no washer involved. The low pressure return lines are sealed by the o-rings. I haven't replaced the injectors themselves on this truck, but it would not surprise me at all to find copper washers under them.
Steve L Did you replace the plastic fittings also? At this point I believe I ordered the wrong kit, I have four 90 degree fittings, and six straight through, but my engine requires three 90s, four straight through, and one that dead ends. The description said for ford/navistar 7.3 IDI Turbo, but this can’t be correct... Thank you for your help anyway
Steve, did you have to bleed the system of air afterwards?
No, the system is self bleeding. The lift pump moves way more fuel than the engine consumes, so it it a complete circuit of supply and return from the tank. Any air in the system ends up in the tank pretty quickly.
Can someone recommend a particular o ring? i bought a large kit f o rings (probably like 40 different sizes) and the 111 feels too loose but the size under it 110 is too small. I think they are just cheap but wanted to get some recommendations as I don't need the entire kit. I only have one injector seeping fuel. Looks to be a cut o ring. Cheers!
I recently had to replace o-rings on a few injectors because they got brittle and cracked (I think it's because I didn't drain water from the fuel filter for too long a time). I didn't feel like spending all day searching for the right o-rings, so I just bought another kit. It was fairly cheap and now I have plenty of spare parts.
Im new to the diesel world, is the fuel return line also called a fuel rail? I'm trying to located on this idi I'm gonna buy and I have to put seals on the fuel rails
These trucks don't have a fuel rail. Each injector has a line going directly to it from the injector pump assembly.
A fuel rail is like a header that goes on a line of injectors. It usually snaps on to the injectors and has a low profile to save space on top of the block.
I could see where maybe someone might refer to the return line as a rail, but that's not good use of terminology in my opinion.
I've never had a newer diesel. Fuel rails may be used on them now, but I don't know. It's probably a lot cheaper to mass produce than the network of steel lines, but I don't know how a rail could handle the pressure of a diesel injection pump.
One of my Injectors still leak but I replaced all of them any ideas?
The seal kit is what I replaced
Make sure one of the o-rings isn't damaged. Even a tiny nick can make it leak. Lube them up to slide them on.
@@stevel6220 will do I’ll take a look
Where do you find new o rings?
O-rings came in the kit. Search "fuel injector installation kit" at NAPA.
If you can’t afford or find the kit - they’re common size #111
P