I just bought a 1991 cherokee limited. I have been driving it for a week with no problems it worked awesome. Last night i came home from work jeep worked great, went to start it this morning and it turns over but wont start. I took a plug out and it fires, i checked to make sure i had fuel pressure and I do. So i have power, fuel and spark so why wont it start?? Also i noticed i had rad fluid leaking also and i never noticed that until this morning, im thinking they may be connected but cant figure out what it could be. Any help would be great! Thanks

 

Have you checked all the fuses and relays.

 

I just insatlled a new CPS cause i was told from a few guys that was prob the problem but it did nothing. I also tried puttin a bit of gas in the throttlebody and still nothing. I havent really checked any fuses or relays. How would i go about checking them? and where would i find them? When it comes to electronics im lost.

 

Try some quick start and if it runs then stops it could very well be frozen gas line. Then put some gas line antifreeze in the tank and let it sit for a little while (give it a chance to work ) then crank it up. After that I would say to try keep ur tank around 3/4's in the cold weather to help prevent moisture and NEVER fuel ur jeep when u see the oil truck dumping fuel..wait a hour or so.. let the fuel settle in his tank.. as your getting all the stir-up if hes there dumping as u fuel ur vehicle.

 

So I pulled the plug off the #1 injector and it started up. What would make that happen?? any ideas? Runs fine while im driving but its runnin really rough at idol.

 

Sounds like fuel flow problems (not talking about the pump). Bad gas, water/moisture in line, I would keep putting in some gas line antifreeze for the next couple of fill ups (like one small container in) and have you every used injector clearer? Cdn Tire has their own brand (its RED) try this stuff when u fill up does a good job of cleaning the injectors.
I once had such crap for gas (fueled while they were dumping) and ended up with such a problem I had to change my gas filter.I've changed injectors too, but only because they were leaking. So try above before going to this extreme.