DEF tank level and usage percents in a normal system

[@donmunro144]

Your timing on this couldn't have been better. I've noticed my def useage is increasing slightly. I'm not seeing any crystilizing in the decomp tube yet. I at least have a direction of what numbers to be looking towards. Thank you.

[@tonyfrangakis3311]

Hello when driving how often or miles how often should the truck to a passive regen driving. I feel it excessive. And sometimes it will pour white smoke out the pipe during the regen. It don’t think it do this before we clean the filter. It’s on 2013 Cummins isx15

[@ENGINESHOPJOE]

Your engine's normal ballpark for regenning is somewhere between 35 hours to 80 hours between regens. That is when everything is working correctly on the engine and aftertreatment system. The number varies greatly because of factors like duty cycle, ecm calibration, Your route, engine and aftertreatment function etc. You need to have someone hook up INSITE software and pull and image and look to see what is going on. There are many things that can cause the issue you seem have so you need to see what is going on before you make any changes to anything. I know it is more cost effective to clean filters but cummins recommends and our fleet has seen from experience reused filters almost never give you a full service life. Most are damaged internally but look good to the eye. Last I just had a unit with frequent regen and it was the DPF sensor. No faults at all just regenned every 8-12 hours and a sensor got it back to 35 hours between regens.

[@Longhauler85]

I've been using Better Diesel's FBC (fuel Bourne catalyst) for the last three months, also sold by Pittsburgh Power as Max Mileage FBC, and it's reduced my DEF consumption from two fill up's a week to just one. When my truck does do a regen, it's for only 5 minutes now. This catalyst improves the combustion process, making it more efficient. It burns the carbon and soot build up. It's expensive stuff, but still worth it to me. No emissions problems at all since using it. Y'all should check it out and look into it. 2017 X15, 742k miles. Another good, informative video, Joe. Keep them coming.

[@ENGINESHOPJOE]

There are good products out there and I appreciate you sharing this. The change in def consumption is nothing short of amazing. I don't understand the 5 minute regen I would have to see a data log of all parameters if i was asked to explain that. Thanks again.

[@Longhauler85]

@@ENGINESHOPJOE I'd have no issue bringing my truck to you to look at the data log. I know you could teach me a lot, lol. I soak up all your info.

[@shawnrice7179]

HELP! Joe, my cm870 is chokeing up and down rpm chugging under a load. Like its running out of fuel.Gets worse when the engines hot! I got a 100gph fuel pump pushing fuel to the ifsm. "Plenty of fuel" Idles fine.When you give it throttle it returns all the fuel that is sitting in the davco water/fuel seperator bowl 100 mile per hour to the fuel tank,, "Air locking the throttle" Looks like its returning its fuel out of the ifsm too fast.not holding fuel prime, Could the ecm be doing this to the actuators? Like its sparatically fireing the 3 front and 3 back bank of cylinders, "CHOKEING ON AIR" ..I did new injector o rings, re timed the engine, new engine wire harness, new fuel pump, new "cummins timing and meatering actuators" still does it. No blow by, Truck egr was deleated in past,No pressure in coolant..no coolant in fuel.. Also no data link to the truck data link plug.. motor was in framed 800,000 miles ago,,Is ECM a possibility? Could the IFSM be cracked? HEAD cracked blowing combustion into the fuel return? Like its getting air from the ifsm-head area. thank you

[@ENGINESHOPJOE]

Why was it pushing fuel back to the tank through the primary filter at such force I am wondering... I do not understand what was going on there. I posted a longer reply but deleted it after I saw your response. This was a new one to me. Thanks for sharing.

[@shawnrice7179]

UPDATE: Ok Joe, New ifsm. Made it better for 1 hour of driveing then it started pusing its fuel out again looseing its prime again.. Whats the long answer sir?

[@ENGINESHOPJOE]

When the engine is hot pull off the 4 actuators and pull off the fuel solenoid wire. Crank the engine and look for pressure or air flow coming out of a fuel port where they were mounted. You should have none. I think you have an issue with an injector or the head.