Injector Seals
#16
Thread Starter
CF Veteran
Joined: Nov 2011
Posts: 2,381
Likes: 5
From: SoCal
Year: 1989
Model: Cherokee
Engine: 4.0
Thanks for the link. I was trying to avoid the $100 but it looks like that's going to be my least expensive option (plus, they're on sale for $89.99!)... the $45 for a set of six from someone here on CF seemed pretty good until I realized I'd need an O-ring kit and $60 worth of pigtails to make them work. Oh well, I guess you get what you pay for. A few people are gonna have empty stockings but my Jeep won't catch on fire. It's all about priorities.
#17
Thread Starter
CF Veteran
Joined: Nov 2011
Posts: 2,381
Likes: 5
From: SoCal
Year: 1989
Model: Cherokee
Engine: 4.0
Much easier with a non-RENIX '95 that uses the EV6 plug. Those silly little EV6-EV1 pigtail converters cost more than the injectors.
#18
CF Veteran
Joined: Oct 2011
Posts: 4,440
Likes: 3
From: Seal Beach, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
Hmmm people sell em on here for roughly 50 or 60 bucks with all that needs to be done to them is some new o rings. Which cost about 10 bucks for a full set of nice fel pro ones. That's what I suggest
#19
Thread Starter
CF Veteran
Joined: Nov 2011
Posts: 2,381
Likes: 5
From: SoCal
Year: 1989
Model: Cherokee
Engine: 4.0
My understanding (and I don't really know, so don't take my word for it) is that the #703 injectors have a different connector (EV6) than my Renix (EV1). Maybe if someone can confirm for me?
For now, I pulled the fuel rail and injectors, built a jig that I could run carb cleaner at 22psi through them forwards and backwards and ended up with a really consistent and nicely atomized spray. I then put a thin bead of fuel-resistant two-part epoxy around the junction of the metal and plastic, retested and voila, no more leak. I know it's just temporary and will probably leak from somewhere else, eventually, but I hope it will get me through Christmas and I'll order the set from Precision Injectors or pick up a set of #703s. I notice a marked improvement in idle smoothness and the exhaust smells much less of raw gasoline. I drove it a few miles then shut it off and turned on a few times, no leaks.
I almost got hit by lightning while I was out there... you think that's a good sign or a bad sign?
For now, I pulled the fuel rail and injectors, built a jig that I could run carb cleaner at 22psi through them forwards and backwards and ended up with a really consistent and nicely atomized spray. I then put a thin bead of fuel-resistant two-part epoxy around the junction of the metal and plastic, retested and voila, no more leak. I know it's just temporary and will probably leak from somewhere else, eventually, but I hope it will get me through Christmas and I'll order the set from Precision Injectors or pick up a set of #703s. I notice a marked improvement in idle smoothness and the exhaust smells much less of raw gasoline. I drove it a few miles then shut it off and turned on a few times, no leaks.
I almost got hit by lightning while I was out there... you think that's a good sign or a bad sign?
#21
Thread Starter
CF Veteran
Joined: Nov 2011
Posts: 2,381
Likes: 5
From: SoCal
Year: 1989
Model: Cherokee
Engine: 4.0
Just wanted to update this, I've driven about 100 miles since my low-budge MacGyver injector fix and still no fuel leaks from either the injectors or fuel rail/ lines!! I've been at a bit of a loss the last couple days with nothing to fix.
#23
Member
Joined: Jan 2011
Posts: 127
Likes: 0
From: Riverside, California
Year: 1988
Model: Cherokee
Engine: 4.0 Low Output
I used the Volvo injectors in my '88 XJ and they have been working great. Especially if you upgrade to the HO fuel system.
They are just like the mustang injectors but have the clip nut provision at the top.
You can basically read on from this post....
http://www.xjsocal.com/showthread.ph...ll=1#post32570
They are just like the mustang injectors but have the clip nut provision at the top.
You can basically read on from this post....
http://www.xjsocal.com/showthread.ph...ll=1#post32570
#24
Seasoned Member
Joined: Oct 2011
Posts: 275
Likes: 0
From: San Diego California
Year: 1988
Model: Cherokee
Engine: 4.0 Liter Inline Six
I JUST fixed my leaky injector over the weekend. I think the trick is to lube up the O-rings at the top and bottom so that they don't move around too much and can seat properly. Another problem could be the injector itself is leaking, Which is what I had. I got the fuel rail and all six injectors off a wrecked xj for like $20.
#25
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
Junkyards sell what? Just as the name implies: JUNK!
Get them from a professional, they will be clean, flow matched, and tested for flow pattern.
Probably cheaper in the long run.
Spend a dollar to save a dime!
Get them from a professional, they will be clean, flow matched, and tested for flow pattern.
Probably cheaper in the long run.
Spend a dollar to save a dime!
#26
CF Veteran
Joined: Oct 2011
Posts: 4,440
Likes: 3
From: Seal Beach, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
AGREED! IMO the OEM injectors on the XJs are junk. Get some quality Neon injectors from a member here or a set from precisionautoinjectors.com, a set of quality Felpro O-rings, and you'll never have to replace or mess with your injectors again.
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