got an 03 dodge.this prob started all of a sudden. The truck turns over till the batteries are almost dead begfore it cranks. When it cranks it runs fine. but when i shut it off wate a min it turns over longer than it should to crank. This is after driving the truck all day or 5 min. Iv got supply press to the pump took chip and programer off still makes no diff.

 

How old are the batteries ???

 

it not the battiers i was just sayin thats how long it turns ouver before it cranks. It turns over strong just wont crank and it has no codes.

 

sounds like injectors going bad letting fuel bleed off to the return line

 

all 6 inj at once? Im a john deere master tec ver familur with high pressure com rail. Cummins is set up a little diff. with a few less check valves but cant see any problem with them. Today my dad used my truck i was lisening to him try to crank turning over and over well he grabs a can of eather and it fired right up what the ..... Its drivin me nuts

 

I think its your injectors as well.

mine did the same thing.

call don M.

 

Probably only one or two injectors that are bad. Do a return flow test on them and find the bad one if you have the tools. How many miles on the injectors?

Need 5K psi to crank.

 

147000 Programer on most of it. how do u single out one inj. and y no code.

 

You have to do a return flow test on each one with the factory equipment, whatever they call it I forgot.

 

def. an injector or two. mine did and is currently doing the same thing. Is your truck making oil?? I have 5 friends that have had same issue, all with programers, very common prob. One of them has recieved 2 bad replacement injectors right out of the box so be careful. The tool that you use to isolate a single injector is simply a fuel line nut that is capped off, if you have old fule lines you can make one yourself. The truck wont start (most likley) because fuel is bleeding off during cranking and not building enought pressure for the rail pressure sensor to let the engine fire. Just remove one injector line at a time and cap of the rail where the line was and crank if truck starts you found the culprit.

 

Any recommendations for a better performance injector, if that's the problem? Looking for an injector to get a little more performance.