99 cummins

[Up N Smoke]

I have a very random no start . lift pump primes normal and will not start leave it sit a hour it fires right up .does it cold or hot no codes and don't have to reprime or anything . may go 2, 3 weeks between doing it. any clues thanks in advance .

 

[Up N Smoke]

Btw Will crank fine just no start

 

[jlbayes]

wait to start light have delay when coming on?

 

[Up N Smoke]

I will have to check what would be causing that

 

[jlbayes]

ecm failing

 

[Up N Smoke]

Ok I will check it thanks

 

[jlbayes]

no problem. got a couple other ideas but that is common on the 99s.

 

[Up N Smoke]

Go ahead and PM me if you want on your other ideas

 

[Up N Smoke]

Any other ideas out there ?

 

[99GreenCummins]

Ecm failing or crank sensor.