04 Will not start

[ReelDuel]

See above post. You must have been typing at the same time as I was. I also waited an hour or so and it started right up too!! Thank you so much

That is the CP-3 inlet. If it started right off on starting fluid now shut it off and see of yu have any long cranks or no starts.

 

[ReelDuel]

I still think something is not right with my truck. The LP still runs 20+ seconds when I turn the key on before I engage the starter. Must be something going on. Like a line from the LP is not tight enough or something. I paid a certified diesel mechanic to replace the LP because I do not have a lift to get under the truck and I am thinking he didn't get a line tight enough or something.

That is the CP-3 inlet. If it started right off on starting fluid now shut it off and see of you have any long cranks or no starts.

 

[cerberusiam]

The run time on the LP is controlled by the ECU, it really has nothing to do with pressure or anything else. If you think there is a leak or LP problem put a gauge on the CP-3 inlet using a tapped banjo bolt, or, insert a T into the rubber portion of the line between the CP-3 and filter housing. With the gauge installed you can watch LP presrure to make sure it is working correctly.

 

[ReelDuel]

Well crap. The truck wouldn't start this morning. Same problem. I tried using starting fluid but the batterys must have been to weak. Charging them now. I did plug the smarty back in ti check codes and that 2509 ECM data power loss came back up. I wonder if something is going on with that??

The run time on the LP is controlled by the ECU, it really has nothing to do with pressure or anything else. If you think there is a leak or LP problem put a gauge on the CP-3 inlet using a tapped banjo bolt, or, insert a T into the rubber portion of the line between the CP-3 and filter housing. With the gauge installed you can watch LP presrure to make sure it is working correctly.

 

[cerberusiam]

The 2509 wll thro all kind sof wrenched into the machine. Could be from the batteries being low or you have a bad power connection to the ECU somewhere. These systems do NOT like low battery charge and\or marginal power\ground connections.

 

[ReelDuel]

Ok that is what I was hoping. I can't do much right now gotta work so wonder what I should try when I get off work.

 

[ReelDuel]

A dodge Cummins mechanic told me that the LP might not be getting enough voltage and that there is a connector near thr LF fender that gets corroded and I need to check/clean it next. Can anyone give me more specifics as to where this connector is. Can I get to it with my truck on the ground?

 

[ReelDuel]

The connector was checked and no corrosion detected. All of the battery wires and connections have been cleaned. Still no start. Fuel lines checked and connections look good.

 

[p-Bar]

These trucks will run with no fuel pump so I am suggesting that you need to check the rail pressure at crank. A DRB lll tool can do that from the dealer could be the CP3. Be sure Batteries are up the ECU doesn't like low voltage

 

[ReelDuel]

p-bar, if the CP3 was bad then how does it crank right up and run when I hit it with some starting fluid? And it will restart and run until it sits over night. I am thinking when the LP was replaced along with the fuel filter that something wasn't put together right. Like maybe something to do with the fuel filter O ring or something in this area. The engine spins like a top with the batteries fully charged. No disrespect here just my mind thinking it has to be something simple as I had zero problems up to this point..

These trucks will run with no fuel pump so I am suggesting that you need to check the rail pressure at crank. A DRB lll tool can do that from the dealer could be the CP3. Be sure Batteries are up the ECU doesn't like low voltage

 

[p-Bar]

No disrespect here got my big boy pants on.That's the odd thing why it runs when you hit it with ether? Can you jerryrig a gravity fuel system into the CP3? It would eliminate the low pressure side. Wondering if it could be the FCA fuel control actuator haven't seen one fail like this . You are throwing no codes?

 

[ReelDuel]

Only had the 2509 ECM data power loss come up. No other codes. Which is why I am lost. Load tested the Batteries today and they checked out fine. Glad you have your Big Boy pants on. I said that because you folks who are helping me know way more than I do. But I am learning fast. My guy who is turning the wrenches is a Duramax guy who is just helping me out. When I left the shop tonight he was going to test the fuel flow volume from the LP. Our Cummins friend gave him specifics on how much fuel should be flowing from the LP.

No disrespect here got my big boy pants on.That's the odd thing why it runs when you hit it with ether? Can you jerryrig a gravity fuel system into the CP3? It would eliminate the low pressure side. Wondering if it could be the FCA fuel control actuator haven't seen one fail like this . You are throwing no codes?

 

[p-Bar]

OK good place to start. Still curious does your Duramax guy have a rail pressure guage?

 

[ReelDuel]

Not sure if he does. I was just trying to help a friend who could use a few extra bucks and save me a few at the same time. Don't the Duramax use common rail now? Either way our Cummins guy should have it. Heck my guy told me Isuzu is the same rail design and he works on them all the time too. So I think he might. Thanks again for the help

OK good place to start. Still curious does your Duramax guy have a rail pressure guage?

 

[p-Bar]

Duramax is common rail and designed by Isuzu.

 

[ReelDuel]

This is good to know. I will find out in the AM. But I still think (not that I know anything) it is something simple causing the fuel to the CP3 inlet losing pressure/prime some how. I'll post tomorrow when I learn what he found out. OBTW we love Cali cados eat them all the time in my house, like 5 or 6 a week.

Duramax is common rail and designed by Isuzu.

 

[p-Bar]

We love them too. Sad a lot of groves dying due to cost of water

 

[ReelDuel]

When will our Govt figure it out. Right?? Cali provides so much produce!

We love them too. Sad a lot of groves dying due to cost of water

 

[ReelDuel]

LP checked out ok. They think it just might be the Batteries are not up to par. So I had a new set put in and what a difference in cranking power. So we will see in the morning if this fixes my problem.

 

[p-Bar]

OK keep us in the loop