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95 dodge cummins not running on #1 cylinder?

1K views 5 replies 4 participants last post by  co84rc 
#1 ·
after some minor investigation it seems as if the fuel out of the #1 delivery valve is weak compared to the others.

can delivery valves go bad?

truck is definately only running on 5 cylinders. it reacts to cracking the line on the other 5 cylinders.

EGTs are down,boost is still the same. no white smoke,but less black smoke. lift pump pressure 25psi at idle,40 under load.

this happened suddenly. fine one night running on 5 cylinders the next morning.

ideas?
 
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