2014 Kenworth t800 with 12 liter cummins

Hello everyone. I'm having an issue with my truck (2014 kw t800 with 12 liter cummins engine). The problem is it asks for a regeneration approximately every 7 hours of running. I do local work and don't get to run it enough for it to clean out the filter. I know it's about to request a reg with i see a lot of white smoke coming out the exhaust pipe. Has anyone ever had a similar problem?? What can I replace so it doesn't request a regen so often?

A little back story, I purchased the truck about a year ago and it had issues with the truck not wanting to regenerate. I took it to a local shop and they dropped the filters, baked them, replace a couple sensors in the aftertreatment system. It ran good for a while until it started with the regen every 7 hours.

Thanks everyone.

 

Hey Jb7, thanks for the reply. I'll have to read that article. The idling varies, but I would say approximately 3 hours per 12 hour shift. Keep in mind that we do local work in the city. Each round trip might be about 14 miles. When will know we're going to be on standby for a while I turn the truck off.
The lube place I go to put Delo. When I purchased the truck about a year ago it did throw a few codes related to the egr. When I removed the sensors to replace them, I noticed that they were coated with thick soot.
I placed an order for the def dozer and the 7th injector (behind the turbo) to get it replaced and hopefully it helps. I will keep you guys updated. Thanks