91 jeep laredo no starte changed coil and crank sen.

Question edited for clarity. Cranking IS turning over. You are cranking but not firing, or starting, or running.

If you haven't much pressure at the rail, your likely problem is not enough fuel pressure and the fuel pump needs replacing. One post here says you need 39 PSI and another says 49 PSI. What do you have? You need to test with a pressure gauge.

https://www.google.com/search?q=1994+jeep+grand+cherokee+laredo+4.0+fuel+pressure+specs

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keep it simple first disconnect coil wire from distributor leaving coil connected, put a screwdriver in wire place it away from fan or other moving parts such as belt , and crank engine, u shld see spark. if not u found ur problem. coil needs to be replaced

check all fuses and relays for pwer and ground

Their is a computer chip behind the antifreeze bottle check the second wire harness play with that while someone turns the key it happend to mine the same thing and started right up

pick-up coil in distributor bad. have to pull dist. take shaft out to get it out

Pickup coil in distributor

check the cam sensor and crank sensor, also is the distributor turning,possible distributor gear pin broke

solenoid on starter is getting hot and will cut out causing the unit not to start - replace the starter

check the fusible link , ingition swith ,distributor asembly and srurk plug .for loose connection and the distributor asembly with the spurk plugs firing order.I thgink it should be 1,3,4,2.dont forget to check the ground .

you may have bent the flex plate ring.so it might be to far away from the crank sensor air gap.