1arunem

Just thought I'd share my experience..


This week I bought a set of 703 injectors to replace my old stockers (had a leaker). After install I start the jeep and find it idling very rough like a dead miss. After about a minute it clears up. I let it run for about 3-5 mins before leaving for my son's baseball practice ( I drove my truck ).


I get back to the jeep today. Start it up and it runs good for less than a minute then starts running ruff again. I let it run a bit and it does not clear up. I start pulling connectors and number 3 from front seems to be the culprit. I pull #3 spark plug and it is beginning to foul. I then notice no pressure on line when I begin to remove injector rail/injectors.


After getting them out, I notice I can blow through that injector (and feel air coming through). I cannot blow through any of the rest. I reinstall injectors with one of my old ones in place of the suspected bad new one. Jeep seems to run as it should.


For some reason that one 'new/refurb' injector seems to be stuck open and dumping fuel. I have contacted the seller and hope they will replace it with no issues.

Will keep you all up to date on what transpires.

XJlimitedx99

That's an unfortunate situation. Hopefully they will get you a functioning one.

I'll share my experience. I just put 784s in this pat week.

My fuel rail was a pita to remove. I think I ended up bending it a bit, so the injectors are kinda not in perfectly straight.

I haven't noticed any difference in performance/idle. Hopefully it will help make a difference after an ignition tune up.