livesignal

They are the solid yellow (orange?) ones and have two part numbers stamped on the sides: F4SE-A1B on one side 0280155700 on the other side Here is a picture for reference: http://www.fiveomotorsport.com/PartsJPE ... 5710_6.jpg I don't really know if mileage is any better since I have never measured it and the idle seems the same. The noticable difference for me is when I rev the engine in park there is no more split sec. hesitation. Mainly though they solved my original problem which was 2 leaking injectors that were a fire hazard. I was not really looking for a performance increase but it does seem to be more responsive once the older injectors were replaced.

Mine is a 1988 4.0L all completely stock. I got the idea to use them from fiveomotorsports.com where they sell new ones and state "Works with stock ECU" for the Jeep 4.0 so I gave it a shot but purchased used ones instead. If you do get used ones, I would recommend the rebuild kit with new o-rings and pintle caps. BTW - a trick to putting the new caps on without cracking them is to use a C-clamp or vise if you have one. Don't try to knock them on or hammer them on just put them in the clamp and gently turn and they will click in place easily.

I used the ford "Design III" 19lb injectors and they work great. My old original ones were leaking pretty bad so I bought 8 used ones on Ebay for $43. Here is another set: http://cgi.ebay.com/ebaymotors/8-Ford-M ... dZViewItem The hardest part was finding replacement pintle caps since some of them were damaged on the used injectors. My local parts store only sold the o-rings. A guy called fuelunderpressure on Ebay sells the full rebuild kit with caps for $16.99 plus $1 shipping. I can definitly tell it has better throttle response and I just passed emissions so the ECU has no problem adjusting the pulse width.

Thanks everyone, I was able to get them removed using a dental pick I picked up at the local drug store. The way the pick is curved at the end and very sharp made it actually quite easy to insert it between the clip and plastic connector then twist the pick so it pulled the clip out the side a little. Then I just pushed that side of the clip forward some ( towards the engine ) and the connector pulled right off. Less than 5 minutes for all of them. Once the connector was unplugged I sprang the clips back into place on the connector to hold them so I don't lose them. BTW, the injectors I am installing I purchased used on ebay for $43 and are part numbers F4SE-A1B, 0280155700. These are the Ford Bosch Yellow Design III 19lb injectors and should work just fine. I'll let you know.

I am replacing some leaking injectors on my 88' Comanche 4.0L and am not sure how to remove those tiny little metal clips that hold the plastic wiring connector on the injector. They look easy to lose or break so I would like to get some advise on which tool works best and which direction to pry before I try removing them.