Scotty, I have a 93 jeep wrangler yj s body with a 2.5L 4 cyl engine, standard trans, and has 159k…

patches11

Scotty, I have a 93 jeep wrangler yj s body with a 2.5L 4 cyl engine, standard trans, and has 159k miles on it. Recently it started to miss at either speeds or if I had to get through the gears quickly and increase engine speeds rapidly, then after a few moments of missing it will backfire and then run fine for quite awhile. Any ideas as to the cause of this? Sometimes when it rains it does it and sometimes not. I've changed the fuel filter in the last 200 miles. My thinking is all over the place from a faulty distributer cap, to a bad fuel pump or even a gas tank with junk in it, to a throttle sensor or even a timing chain issue. I sure could use some advice on this. I'm fairly handy with most auto issues but wondered if a good mechanic should get involved with this. Any info would be amazing to help me determine if this is something I can do myself or need an expert. BTW, I'm fairly new to the jeep family. This is my first foray into this type vehicle. If I take it to a pro I want to at least be somewhat certain as to what to expect. I'm living in a new area and don't have access to my mechanic of the last 23 years.

Thanks for any advice you can share with me.

Comments (2)
patches11
patches11

OEM plugs and wires. No Iridium plugs.

No. 1-2
Techsus
Techsus

Dud you install Iridiim spark plugs & OEM plug wires?