Intermittent missing @ idle

[reelhooker1414]

I have a Job 1 F350 with Spartan 250 tune running, DPF Delete. At idle I get what I would desribe as a missfire or stumble. It reoccurs every 20-30 seconds, the FRP drops for a split second, then everything goes back to being fine. Could it be EGR cycling? Bad injector? Anyone else feel this?

Thanks

[chi6488]

I thought mine was also. This was about the same time I was having my truck smoke like a locomotive during regen. I tried deisel kleen and it smoothed it out but didn't stop the smoking. I deleted to stop the smoking.

Try diesel kleen

[08stroker250]

Monitor your EGR percentage while at idle. It should be under Commanded EGR or something like that. You will see it cycle every 20-30 seconds to about 30-35% open. The exhaust note will change.

[reelhooker1414]

Ok, will do, and check back,

but the bigger question would be, should I feel it cycling? I mean when it stumbles for the split second, you can feel it, and hear it. It would seem like an 8 cylinder diesel shouldn't sputter when a load like this is applied (at least I wouldn't of thought so)

[08stroker250]

Do you have any codes?

[reelhooker1414]

Nope no codes

[05_PSD_Erik]

Mine is doing something similar and I'm tuned by SCT....