Topic: Issues with 19# injector swap

[sharpxmen]

I went to the stealership this morning. First he said the clips were not avail. Then he looked again and said they were $25 each. So I said I would try and glue them.
So I tried some Krazy glue gel. That failed! So I went out and got some Elmers model glue. I just got done glueing the connectors. There is 2 that are broke. It cures in 24 hours. I might try a zip tie too.
I'll fire it up tom. and see what's what.
They are the same type Cobra injectors you have. I have another set here, so I might swap them if it does not run right after some miles get put on it.

the clips on the connectors are only to keep them from coming out - you could use some silicone or rtv for the same purpose (but i guess it's kinda late now for me to say that).

[FourbangerYJ]

the clips on the connectors are only to keep them from coming out - you could use some silicone or rtv for the same purpose (but i guess it's kinda late now for me to say that).

I know, but when I would touch those 2 the idle would change from rough to normal. So I wanted a tight fit.

[sharpxmen]

I know, but when I would touch those 2 the idle would change from rough to normal. So I wanted a tight fit.

just guessing then that it was the harness connectors, you could try and get them closed up a little - not sure if the glue would keep the electrical connection firm. keep us posted how that worked out though.

[aw12345]

Any way you can cinch them down with a small zip tie?

[Jeffy]

You should be able to find replacement plugs on ebay or any auto parts store BUT you'll want to take apart the originals and put them back together without cutting them.  Cutting and soldering would be the worst case scenario.  I would clip them on then use a zip-tie to hold the plug together.  Glue isn't going to hold it together since they are small and they have tension on them when they are either removed or installed.  ie. it will break again.

[FourbangerYJ]

You should be able to find replacement plugs on ebay or any auto parts store BUT you'll want to take apart the originals and put them back together without cutting them.  Cutting and soldering would be the worst case scenario.  I would clip them on then use a zip-tie to hold the plug together.  Glue isn't going to hold it together since they are small and they have tension on them when they are either removed or installed.  ie. it will break again.

Well one broke and one held. I started it again this AM and let it warm up. It was much better as far as the idle. After it warmed up the idle went to it's normal RPM. But the CEL was on. I turned it off, then re-started it...no CEL. I just started it again, no CEL. I guess it's going to be a hit and miss thing.
I did notice once warmed up  the idle would be smooth for the most part, then it would idle kinda rough for a split second then smooth out again.

I did try a small zip tie, but the connector has some windows on the sides. So making it tight without it slipping is going to be tough.

But on a side note I ordered my PD Ignition today. Should be here next week!

[YJake]

I had all kinds of issues when I tried the injector swap just like you are. My Jeep ran like shit and kept dying after a really low idle. There was also lots of carbon in the exhaust.

Not only that, but my 1st injector stopped working correctly and I had to run on 3 cylinders for a few months. The reason that happened was because I had one of the plastic connectors crack into 3 peices, so I went to the local pick-n-pull yard and took 3 connectors off of a cherokee and just put one on (took old one off and put wires in new one).

Now, my injectors were bad and that's why my Jeep sounded terrible and died after starting it so I swapped the old ones back in and took the injectors back, suprisingly they gave me my cash back and the Jeep ran fine again.

I recently ordered a set of 4 Gen 2 19lbs. injectors that were refurbed and I'm hoping I'll have better luck this time. 

[Jeffy]

This is why, it's best to get the lowest mileage injectors that you can get.

[FourbangerYJ]

I am not sure how many miles are on the ones I swapped in. I think I am going to hang onto the extra set I have in case these don't work out.
I have hardly ran it since the swap. It does seem to run OK. I think the ECU needs some time to adjust.
I would think when I swap in the PD kit it should help burn the bit of extra fuel too.
The first time I started it there was some black watery gunk that came out of the exhaust. Now it drips but it's clear. Maybe there was some gunky fuel in the injectors

On the clips will a 4.0 one work? I wouldn't think so but I thought I would ask. I went to Napa and the said they can't get them. Any idea what stores might? After watching Mythbusters last night I might try duck (duct) tape.

[sharpxmen]

I am not sure how many miles are on the ones I swapped in. I think I am going to hang onto the extra set I have in case these don't work out.
I have hardly ran it since the swap. It does seem to run OK. I think the ECU needs some time to adjust.
I would think when I swap in the PD kit it should help burn the bit of extra fuel too.
The first time I started it there was some black watery gunk that came out of the exhaust. Now it drips but it's clear. Maybe there was some gunky fuel in the injectors

On the clips will a 4.0 one work? I wouldn't think so but I thought I would ask. I went to Napa and the said they can't get them. Any idea what stores might? After watching Mythbusters last night I might try duck (duct) tape.

if you're asking about the connector clips they are the same (same connector) for 4.0 and 2.5. In fact i believe all EV1 connectors would have the same clip. even the injector clips would work between 4.0 and 2.5 (the ones holding the injectors on the rail).

[FourbangerYJ]

if you're asking about the connector clips they are the same (same connector) for 4.0 and 2.5. In fact i believe all EV1 connectors would have the same clip. even the injector clips would work between 4.0 and 2.5 (the ones holding the injectors on the rail).

Good to know. I'll keep an eye out. The Gen III injectors don't use the metal clips to hold the injector to the fuel rail.

[Jeffy]

I am not sure how many miles are on the ones I swapped in. I think I am going to hang onto the extra set I have in case these don't work out.
I have hardly ran it since the swap. It does seem to run OK. I think the ECU needs some time to adjust.
I would think when I swap in the PD kit it should help burn the bit of extra fuel too.
The first time I started it there was some black watery gunk that came out of the exhaust. Now it drips but it's clear. Maybe there was some gunky fuel in the injectors

On the clips will a 4.0 one work? I wouldn't think so but I thought I would ask. I went to Napa and the said they can't get them. Any idea what stores might? After watching Mythbusters last night I might try duck (duct) tape.

The plugs are called EV1's.  They are a standardized plug for Bosch injectors.

http://motors.shop.ebay.com/treperformance/m.html?_nkw=&_armrs=1&_from=&_ipg=

http://www.jegs.com/i/AEM/017/30-2020/10002/-1

http://www.summitracing.com/parts/MSD-2400/
http://www.summitracing.com/parts/MSD-2400/
http://www.summitracing.com/parts/MSD-2400/

http://www.fiveomotorsport.com/Injector_CONNECT.asp

[FourbangerYJ]

The plugs are called EV1's.  They are a standardized plug for Bosch injectors.

http://motors.shop.ebay.com/treperformance/m.html?_nkw=&_armrs=1&_from=&_ipg=

http://www.jegs.com/i/AEM/017/30-2020/10002/-1

http://www.summitracing.com/parts/MSD-2400/
http://www.summitracing.com/parts/MSD-2400/
http://www.summitracing.com/parts/MSD-2400/

http://www.fiveomotorsport.com/Injector_CONNECT.asp

  Thanks!

[YJ KiD]

i was doing some research on the injector swap and found that the 5.0 stock fuel pump only runs 80 to 90 psi and the wranglers runs 90 to 100 what kind of concern shuold i have about fowling plugs and so on? do the plugs need to be gapped differently or ron a hotter plug to compensate?  I am planning on planning on doing the swap tomorrow and am trying to make this gp as smoothly as possible.  thanks in advance

[sharpxmen]

i was doing some research on the injector swap and found that the 5.0 stock fuel pump only runs 80 to 90 psi and the wranglers runs 90 to 100 what kind of concern shuold i have about fowling plugs and so on? do the plugs need to be gapped differently or ron a hotter plug to compensate?  I am planning on planning on doing the swap tomorrow and am trying to make this gp as smoothly as possible.  thanks in advance

not sure if i really understand what you're asking but: the fuel pressure has pretty much nothing to do with the spark plugs. the colder or hotter plugs mean how fast the spark plug would remove the heat out of the chamber, hotter plugs remove the heat slower and to give an example the higher compression ratio engines or forced induction engines (turbo/blowers) use colder plugs.

also, fuel pressure rating on a pump is the max pressure that the pump would make - but you can have a pump that is rated at max 80 psi with a higher flow than one that is rated at 100 since neither one will actually be used at that pressure (like the TJ which operates at 49psi)