[Landscapeman]

The truck idle fluctuates from 600 to 1000 rpms at idle. In gear and not. With the chip and without. Full tank and Empty. This a little concerning and dont know what the problem is. Any help is much appreciated.

 

[Cummins 67]

Dirty injectors?

Fuel filter changed when?

Air filter cleaned or changed when?

 

[Landscapeman]

Fuel changed 5127 miles ago and the filter was cleaned about a month, moth and a half.

 

[BILLS06]

Dump a can of seafoam in and run her hard. Be amazed at the results!

 

[Landscapeman]

10-4, Will give it a try in the morning and pick up a new fuel filter.

 

[yzgaret]

Seafoam? I'm interested.

 

[Landscapeman]

I have used Powerservice in the past and i will pick up a container tommarow A.M. as for the Seafoam is it good for Diesel? I've used it in gassers and mowers.

 

[DBLR]

SeaFoam contains a lot of Alcohol and its not recommended by Dodge or Cummins to be used in a diesel engine even though the maker of SeaFoam claims it can be used in diesel. Alcohol is used sometimes to de-gel gelled fuel and then only in something like Power Service 911 that also contains additives for the fuel system.

JMHO

 

[tclappcummins]

can you actaully tell the truck is idling that much difference or is it just the tach bouncing... (not trying to seem like a smart ) but my tach is doing similar things right now but the truck itself isnt actually idling that way just the tach bouncing I have heard of other guys having the same problem

 

[ward.racing]

mine used to do that in the past. The tach would jump around.

 

[lakelife79]

Its either a sticking injector or your FCA in the CP3.

 

[Landscapeman]

Thanks for the input. The truck actually idles up and down. I was hoping it wasnt anything serious because I use this truck for my business and once I fix something I will jump into it with both feet. Injectors, turbo, etc. Thanks I'll keep you informed on what it turns out to be.