JackJare9455

investinwaffles

Wait, last noob question for the night. How should I seat them?

Install the injectors into the rail, clip in place. Then try to push all of them into the port and I should be able to let go and even pull on it to make sure they are seated before putting the bolts in?

JackJare9455

lol leave my jeep alone salad!

JackJare9455

thats how i did it... i placed all of them in the rail.. (forgot to clip them) and then set them into the intake... made sure they were all uniformly installed.. put my clips and bolts in... done

investinwaffles

Sweet, thanks for the tips guys, and for the reference pics JackJare.

Bring on round 2, now I know how they seat in there.

salad

What? I'm insanely jealous lol

investinwaffles

Well, turns out they were all pretty much seated.

I first unbolted everything, then tried to seat them even more by pushing down. They wouldnt really go in any further.

Took one of the old injectors, mashed it into the port as far as it would go, and marked where it was even with the port. Measured with a caliper and did the same with one of the 703's to reference because the outside design is different than the OEM jeep injectors, which is why they looked like they were sticking out a ton.

Installed them into the rail with some synthetic 5w20 for lube, then into the ports and made sure they all matched roughly. Slid right in after I lubed everything up a bit more (I was for some reason trying to keep the gaskets a little dry last time)., and zero leaks. Drove it another 40 miles over the course of the day and it looks like I am good to go.

Holy crap, what a difference this made to my idle. And relieving to know that the tick I had was an injector and not a lifter or something else. She really purrs right now and sounds so smooooth.

o2 sensors are next. If your injectors have 160k or more on them, I would highly recommend throwing in some fresh 4-hole ones.

PocketsEmpty

There really isn't a specific science to plugging in the 703 injectors. When I did mine, I plugged all injectors into the rail first while it was out, and then just pressed it into the head. I wouldn't call it a "pop" but you could definitely feel when they slid into place. Also, you should use dielectric grease around the O-rings. Maybe I'm just paranoid about oil eating rubber, but that's what I did and it worked perfectly.

I could see your issue being caused by re-use of old O-rings. Glad to see you got it figured out though, the 703s are definitely a great upgrade. Here is my comparison pic of the stock injector vs rebuilt 703.

investinwaffles

The injectors came with new o-rings, but I am going to swap for fel-pro for fun when I put a new rail in.
Thanks for the help guys!

salad

Right on man, glad you got that sorted. Ans thanks for reporting back!

JackJare9455

and salad made it sound like you should feel a pop like you just broke your arm.. lol

almost a miniature explosion in your intake manifold from the release of so much pressure of the injector o-ring seating LOL

salad

lol