I have a 03 3500 in the shop with a bad lift pump, but I also have an 05 that has been seeing double duty. This morning it ran out of fuel while idling. I put new fuel in and it fired right up and ran for 20minutes. Then it started this horrid banging. Oil pressure just fine and it runs nice and quiet under the banging.

I'm pretty p*ssed and Dodge this morning.

I am in Alberta and its -33, so I'm also cold.

 

These two threads might be some help.

https://www.dieseltruckresource.com/...threadid=55602

https://www.dieseltruckresource.com/...threadid=56493

Reader's Digest Condensed Version = Noise was caused by a bad injector.
For what we're seeing, not uncommon with the new common rail injection setup.

 

well seince no one else is jumping in I will try...Are your inj. where you can get at them?? (The newer the eng. this (isb)comming a thing of the past) So if you can get at them you can drop a cyl. by loosning the inj. rap a rag around it take it for a spin and see if it changes....you will of course be running on 5 cyl. but you can isolate the cyl/inj. this way.(keep in mind you will be leaking fuel)
dose the eng. make this noise at idle??......or under load? more on deacceleration??......this will help I.D. the problem.
The dealer can do a cyl. drop with the ob1 setup.......no mess

 

Is the noise there when you shut the truck down,after the fuel is shut off,

 

Just brought it to the dealer. Got the usual attitude.

The banging was only there when running. I called DC and snivelled to them, so we'll see what CS means to them.

As stated, my 03 is there waiting for a back ordered lift pump and now my 05 is bangin like nothing I've ever heard. 2 trucks in their shop and I can't find anyone who will lend a sense of urgency to the situation.

I've got clients waiting and lost some business over this fiasco.

 

DC called the dealer and lent the sense of urgency I so badly wanted. Turns out that I did not run it out of fuel, but the thing just quit.
Why did it quit? I don't know, but they say that #1 push rods`were bent and that was my banging.

They say no damage to the valves and it is running just fine, but I'm leery.

I ask how could a truck with 7200km have bent pushrods? They say it was because it was left idling in the cold weather. "c'mon" I say. How can idling bend push rods? They could not answer that. They added the high idle feature and then told me not to use it higher than 1200rpm. Don't know why.

The 03 is still in their yard and now they tell me that the lift pump should be available early Jan.

Thanks for the help guys.

 

Yeah I here ya It does sound pretty funny to me too, How does it sound now.

 

Sounds OK to me, but I still can't see how push rods bent?!

They still can't tell me when I can expect my 03 to get its new lift pump. 8 days and no timeframe.

What about the other two (chev - ford)? I know they are both more $, but is their service any better??

 

When the truck idles in the cold, the engine does not stay warm enough to allow the fuel to burn properly. The valves get all sooty and can stick open, then the piston comes up and... Whammo! Positive valve closure... and a bent pushrod.

Tips to avoid it:
-fuel additive
-winter front
-high idle kit (or stick)
-installing an exhaust brake and leaving it closed when idling will also help with warmup.

 

Stick with your rigs--take a Look at www.thedieselstop.com to see how the Ford 6.0 is doing. In a word, you'll be thankful even with a few hiccups.

 

I have a winterfront. I use an additive. I have not had this trouble with my 03, but that being said - its in the shop for a lift pump.

They put the high idle feature in, so I'm hopeful that the idle, coupled with the winterfront and additive will prevent this in the future.

Thanks again for all the input and help.

 

even if it was from idling too long i would consider it a cummins problem for wrong R&D. all they did to rectify it is run looser guides in the newer ones......whats that tell ya????

 

Don't blame the dealer because the lift pump is on back order. They can't stock them as it needs to be released as needed by tech center. !!! NEVER NEVER NEVER!!! "crack" open the lines on the common rail system. You won't just drop a cylinder as all the lines have the equal amount of psi in them The fuel log and lines merely hold pressurized fuel and the injectors are opened electronically.

 

I don't blame the dealer for not having the pump, I blame them for being indifferent and just palin ignorant.

I blame DC for not having parts for their trucks.

As far as cracking lines, I'd never do it. I consider these trucks to be Mercedes' and not to be touched by anyone but the guys with the training. Never mind the fact they're under warranty.

Does anyone think that there may be damage to the valves, cam, piston??

 

THE reason for not ever cracking the lines on a common-rail system is that you're looking at fuel pressures in the accumulator to the injector IN EXCESS of 20,000 psi. In other words--it will slice right through you at that pressure. Guess I missed this comment previously--this needs to be well understood by all who have a common-rail equipped truck.