fuel injector

Ok so I am chasing a possible misfire/long crank situation. And I haven’t seen the condition of the fuel injectors. So took them out and need your wise minds to tell me what’s going on here. Obviously they’re dirty. Not OEM. Some cracks. Some looks burnt/discolored. What causes that? Is that...

Hello all, My first post here, I got my TJ in late October with 140,000 miles, (Black Sahara 98% Stock and in great shape) I have been doing all the normal things that you do for a new-to-you vehicle, (oil change, spark plugs, air filter, replace oil pressure sensor, clean throttle body, clean...

Engine has been running slightly rough, audible random misfiring (no misfire codes), slight shaking of the vehicle and P0201 was tripped. Inspected the wiring on injector 1 and found exposed wires. Further inspection of other electrical connections (other 5 fuel injectors) look similar with...

I've heard PCMs are hard to find these days. I've got a 1998 4.0L. Codes showing #5 cylinder problem (P0205) even after I replaced injector, switched it to see if it's defective, and replaced connector. The injector is not clicking. So I'm thinking it's the PCM. One mechanic told me those are...

Okay so I’ll cut right to it. This has been plaguing me for almost a month now and has finally come to a head. 3 weeks ago, I’m sitting around on a Sunday and decide to change my oil and do my spark plugs. I have a 2000 TJ 4.0 with 215k miles on it. Haven’t had any real issues besides replacing...

I have a 2005 TJ 4.0 and I joined for some help. I have a P0303 code which is cylinder 3 misfire. Things I have done so far include all new spark plugs, new coil rail, new o2 sensors, swapped the first fuel injector with the third fuel injector, and a new crank position sensor. Only thing I can...