Hello I'm new to the forum and to jeeps
Anyways I need major help
I wen out to start my 1988 jeep cherokee sport 4.0 HO this morning and I let my jeep warm up b4 leavening the house so when I came back out to leave I noticed a small puddle under my front diff
I swabbed it with my finger and noticed it was GAS!!!
So I piped my hood and my 3rd injector in from the front is leaking
I would guess these r the OEM injectors and I bet the o rings are shot
So my ? Is should I rebuild my injectors or buy new one and if I buy new one what one should I put in
I don't have mile deep pockets so I need something somewhat cheep not saying I'm trying to rig something up I just don't want to spend 300 to 400 dollars on injectors
Someone please help

 

Members on this forum are frequently selling injectors they've pulled and cleaned from the junkyard. I bought some from someone on here and they've lasted 20k miles and still going. Look in the ForSale section. You might be able to find an upgrade- some injectors have better atomization and spray patterns.

I'd recommend just upgrading with some used injectors that have been cleaned. The o-rings are easy to replace when you swap them out.

 

X2...if you want the absolute cheapest route, just buy the o-rings and replace them, but if you're gonna go that far, might as well get some better injectors in there as well....

 

I would like to upgrade but I don't know what set to get
743
703

 

I believe you need the 703's, if I am wrong someone please correct me...

 

Best for the 1987-1990 Renix are actually 746s from a Volvo. See here:

https://www.cherokeeforum.com/f2/1990-renix-volvo-bosch-19-280-155-746-injector-swap-163105/

 

So I a newbe and I don't know what Renix mean someone please help me w/o insult
Thank you

 

O rings are about $15, I'd start there. It takes about 20/30 minutes to install.

 

During 1987-1990 the Jeep brand was owned by Renault. They introduced the 4.0L I6 engine with a combination of their own Renault technology and established Bendix tech. Renault/Bendix = Renix. It technically refers to just the fuel injection/computer system but there are other differences between the Renix series of Jeeps and the rest of the production (under Chrysler or under AMC proper)

 

So what a better engine the Renix or the non renix

 

You have an 88 that's a HO? Red flag.

 

Neither

 

I was told it was a HO but I'm not sure how do I tell???

 

High Output was made by Chrysler starting in 1991. 1988 is a Renix.

 

grab the VIN and run it.