1989 XJ 4.0 auto 4x4

I have a leaky fuel injector.
It is leaking where the injector enters or the end of the screwdriver in the picture.

Do I need new seals/o-rings? I hope so because I certainly don't have money for a new set at the moment. This is my only vehicle so I'm screwed if I need new ones.





Hope this shows what I mean.

 

I meant to say it only started leaking after I turned it a little so I'm hoping and praying it's the seal.

 

Those injectors are horrible and are known for leaking/possibly causing fires.
If you have one leaking I would change them all out for a newer style single piece injector, Look in the classifieds section and you can find rebuilt ones that arent too expensive, and definitely cheaper than a flaming jeep.
You need the EV1 connector, but Im not sure what the actual injector number is supposed to be for a renix. I have yellow ford ones in my 89, but I also had to change to the 91+ fuel rail which is a major job.

 

Volvo 746 injectors.

Programbo here on Cherokee forum has them reconditioned for a great price.

 

I discovered today I have another leaking at the same area.
I would love to upgrade injectors but sadly I don't have the money at the moment. I'm just going to change the seals on all 6 injectors and pray that's it. If not I'm stuck until I can save up enough to upgrade. Yes money is that tight these days.

Edit: does anyone have a good step by step link on how to change seals?

 

Its just Orings top and bottom. Also, Its definitely NOT leaking from where you are pointing, since that is where the injector enters the intake and it would be under vaccum, not pressure, on the other side of that Oring. Its leaking higher up and pooling there. The renix injectors are a two piece, Metal lower and plastic upper half. The metal is crimped over the plastic. Eventually with heatcycles/etc the crimp loosens and they start to leak.
You can change the Orings, and there may be a leaking one there if you are lucky, but Im still betting on the injectors being the problem.

Pretty simple.
Relieve fuel pressure
Remove fuel rail/injectors.
Remove injectors from Rail.
Change Orings
Reinstall.

 

Your probably right but there is simply nothing I can do if it is the injectors today. I'm going to change the seals now.
Mine being a renix, what car can I get injectors off of that will work with my connectors, that way I know for the future if the seals don't work?


Thank you.

 

0-280-155-746 off a 5 cylinder Volvo.

 

Thank you. Will remember that.

I changed my seals yesterday. Had a couple slip ups but all in all ok and so far no leaks.

I did break 3 vacuum lines doing this, shown in pictures below. Any tips how to fix these or just buy new ones. The way these are made are weird because they are not hoses but actual hard lines.




You can see the bottom two broke. There has never been anything on the top left (hard to see) Should it be?





This is on the side of throttle body. I think it's air intake vacuum.

 

Go to www.cruiser54.com and see tips 22 and 31.

 

Definitely check out Cruiser's information. It won't right (if at all) without the line between the MAP sensor Throttle Body so you need to fix that one first. You can get the entire harness online for pretty cheap. Amazon has it under Cherokee Vacuum Harness. They sell a DORMAN product. I think NAPA still sells it too.

I swapped out the stock BOSCH single hole injectors to the 746 4-nozzle injectors and haven't looked back. It's easy and cheap. My stock ones started to go one after the other and I was getting to the point that I could get the hold injector rail off and ready to work on it in 20 minutes so I had lots of practice. I tried vasoline, tape etc to stop the leaks but the body of the injectors was leaking. If you bend them slightly while pressurized, and you get a hiss, that's most likely the body of the injector leaking. I think someone on this forum suggested epoxy on the body to fix that but not sure how long that would last with pressure and fuel behind them all the time.

 

I hope the "no leaks" holds up.
As for the vacuum lines I shall be fixing them one way or another tomorrow.
In my opinion these hard brittle vacuum lines are a design flaw on jeeps behalf.

 

Here: