Topic: Yj Fuel Injectors

[Nicks92jeeper]

I looked around and didn't find the answer I was looking for. I have a 4.0 throttle body on my 2.5 and a MSD ignition coil as well as going to be installing a cold air intake. Would it be benaficial to install larger fuel injectors? Are there any real performance benefits because I just see that the engine might need more fuel? Can I take the injectors from another vehicle? Last question I didn't research yet on injector swaps. Thanks for your help

[sharpxmen]

read the injectors swap thred in the faq and "fuel pressure regulators" thread in "workbench", there is a lot of info covered in those 2 threads regarding yj fuel injectors.

[Nicks92jeeper]

Thanks Sharpxmmen!

[Nicks92jeeper]

So I did the fuel injector swap and she sound good. Throatier and deeper and since I was at it I added a cold air intake. Question I have is how do you know if you have a bad injector. I don't think I do but just in case.

[FourbangerYJ]

So I did the fuel injector swap and she sound good. Throatier and deeper and since I was at it I added a cold air intake. Question I have is how do you know if you have a bad injector. I don't think I do but just in case.

Check engine light can come on. It will run real rough and have no power. RPM's will not climb much past 3K

[Nicks92jeeper]

So one of the connections was not completely on and once I put it on snug the idle evened out and the jeep sounded better. The jeep definitely has better performance and sounds better. I also put sea foam in the gas to help make sure the injectors are flowing well. Sometime this week I hope to change the fuel filter as well.

[Jeffy]

If you're running on 3 cylinders it's kinda hard to tell at idle.  Once you try to drive anywhere it will be like you're running on 2 cylinders.  A CEL will appear.  I think it's Code 27.  If you crack one of the clips that holds the plugs to the injectors you can jerryrig a zip-tie around the clip to make it work.  Well, if the bar hasn't actually broken off.