Cranks but won't start. No check engine light

Hello! My 85 cj7 has Howell efi kit, about 2 years ago. Been running great. Now, won’t start, no check engine light. Cranks but won’t catch/fire. Battery good, fuses good, bulb for light good, starter solenoid good, distributor has spark, gas is full! I’m not sure what else to check. Help! I’m a newbie.

 

Do all cylinders have spark? You can use a timing gun for an easy check.

If you truly are getting spark, it shouldn't be a grounding issue, but you can always grab the frame and engine grounds to make sure they are tight.

Next thing is fuel. I know you said you have gas, but do you have fuel going into the cylinders? Is your fuel pressure right? It could be a simple bad fuel pump issue. If you aren't getting fuel up to the engine, you might just have a weak or bad fuel pump.