Turns over will not fire without help

[5tonjeep]

Oh yea it's been fun lol the fuel pressure is where it needs to be now. Yes I have turn the key weighted turned it off and then turn it back on all it does is turn the motor over no fire. I'm messing with the Jeep right now trying to figure out what else there is.

 

[JP98]

Have you checked for spark from one of the plug wires when it is acting up? Check the distributor and see if you are getting juice.

 

[5tonjeep]

Yes it has spark. Once it's up and running it runs fine no problems at all

 

[JP98]

Ok. So we have fuel pressure and spark while it is not wanting to crank. You can spray starter fluid and she will fire up and run. So, it sounds like you are not getting fuel into the cylinders even thou you have pressure.

 

[5tonjeep]

So do you think you would be the injectors then being the problem?

 

[JP98]

Wouldn't be all the injectors at once. Try cranking it again, then immediately pull a plug. If fuel is getting to the cylinder, it should be wet with raw fuel.
Have you checked the crank position sensor?

 

[5tonjeep]

Alright so yesterday I pulled the injectors had them professionally cleaned and tested. They all came out good spray pattern and everything are where they need to be. I tried turning it over and noticed it still not getting fuel into the cylinder. So it's a night I'm going to hook up a external fuel pump from my big mud truck which I know puts out fuel pressure straight to the rail and see if that works. I'm hoping the new fuel pump is in bed already too.

 

[JP98]

Alright so yesterday I pulled the injectors had them professionally cleaned and tested. They all came out good spray pattern and everything are where they need to be. I tried turning it over and noticed it still not getting fuel into the cylinder. So it's a night I'm going to hook up a external fuel pump from my big mud truck which I know puts out fuel pressure straight to the rail and see if that works. I'm hoping the new fuel pump is in bed already too.

If you have proper pressure on you rail it can't be the pump. Something is telling your injectors not to send gas. Have you checked the ASD relay?

 

[5tonjeep]

Just pick the Jeep up I gave up and took it to somebody and paid them to figure out what's wrong with it. The computer is glitching that's why I couldn't get it to work and sometimes I couldn't get it to work. So that's hopefully my final problem and the final thing I gotta buy for this thing. Just want to thank you guys for all your help I really appreciate it!!

 

[JP98]

Just pick the Jeep up I gave up and took it to somebody and paid them to figure out what's wrong with it. The computer is glitching that's why I couldn't get it to work and sometimes I couldn't get it to work. So that's hopefully my final problem and the final thing I gotta buy for this thing. Just want to thank you guys for all your help I really appreciate it!!

Good luck. I was hoping it wouldn't come to the ECU.

 

[Chris]

Obviously I am late to the game, but I was going to suggest it might be a PCM (ECU) issue. I know @Frank was having issues similar to this recently (if I remember correctly) and his turned out to be the PCM.

Hell, @StG58 had to replace his PCM recently as well.