I have a 2019 6.7 i purchased last Oct. I just had the DPF screen enabled at the dealer and they completed a regen for me. So now I have been watching it creep up, now its at 90% I drive 30 miles each way to work at 60-65 mph so i think it would activate on its own. That is what I have been watching for. So at what point will it start? Do I need to do a manual regen now since its at 90% ? thanks jeff

 

Mines a 2015 but the region starts at 100% full and stops at between 20 and 35% depending on how the trucks being driven. Stops sooner if in stop and go driving.

 

Still trying to understand when and what triggers it. What i have read it would be 500 miles driven or DPF reaches 100% whichever hits first. So im at 90% I should expect a active regen to happen soon. Going from a 2002 7.3 diesel to a 2019 6.7 is a big jump in tecno for me. I had the 7.3 all figured out... not this one yet... thanks

 

Regen will start at 500 miles driven or 100% full. Using my edge CTS2 after 20-30 miles my percent usually goes down into the 20% range but I have seen it as low as 9%

 

The PCM/ECM determines when to do the regen based on many factors and not just miles since last regen or DPF is 100%. If you are towing, your truck might be doing passive regen. This happens when the EGT4/EGT14 exceeds 750*-775* F. The DPF exceeding these temps will burn off some of the particulates. The truck exhaust screen might show only 50% or 75% or any % below 100% when the active regen starts.

Just because you have exhaust filter screen activate, you might not be able to do a manual regen. I would drive the truck normally and let the PCM/ECM determine when to do the regen. I am not sure about the 17-19 trucks if you have the ability to do a manual regen or not once you activate the exhaust filter screen. I know that the 13-16 trucks you can't. Most use a monitor or tuner to do the manual regen. I know with the Edge CTS/CTS2, I can do a manual regen if needed.

The only time I would consider a manual regen is when you can not achieve the required mph for a regen to start. This could be a situation when you are towing in the mountains and receive the message "Drive to clean". At this time I would consider pulling over and doing a manual regen.

For the most part, stop worrying about the percentage shown on the exhaust filter screen. Drive the truck normally. Even if a regen starts and can't fully complete, do not worry. Some owners try to plan a drive that allows the regen to finish but most of us do not worry. Again, drive the truck normally and let the PCM/ECM do the worrying for you on when to do a regen.

 

sounds right maybe that's why ford had I work in the background My concern was about shutting down the truck during a active regen since there is no warning telling you it is doing it, I do have the capability to do a manual regen if needed but would rather the truck take care of it. At least with the DPF screen monitor I will be aware that one may occur thanks Jeff

 

One of the reasons Ford doesn't activate the regen screen from the factory. People worry to much and then tend to screw up something that is performing per design.

 

Do not worry about shutting the truck off during a regen.If the exhaust temps are hot enough, some of the ash will burn off reducing the % full to a lower percentage. If ight start the regen again in 100 miles or less or more depending on what the PCM/ECM computes the % full the DPF is. The only time you need to worry is when you get the warning messages show in your owner's manual such as "Drive to clean" or DPF overload..

 

I have to respectfully disagree with this statement. I send my oil to blackstone for analysis at every oil change (5000 miles for me) and when I was just driving the truck I ended up with higher than normal fuel dilution. Once I started paying attention to regens and attempting to complete them as much as possible, fuel dilution went away. I also idle for a few minutes if I have to stop an active regen, I'm sure this also helps remove any fuel from the cylinders instead of dropping it in the crankcase.

If you are not one to worry about fuel dilution then by all means just drive the truck. If this is still an issue on the 17+ trucks I don't know, I've read the 17+ trucks have a different regen strategy than the 11-16's.

 

Dirt...if Ford thought it was a problem, then the owner's manual would carry a warning. Just because your oil sample showed higher than normal fuel dilution, it doesn't mean it came from incomplete regens. You are welcome to believe what you perceive as a problem, I do not see the incomplete regens as an issue.

 

I'm thinking maybe Larry forgot to mention to let the truck idle in park to not only shut the active regen, but to also allow the truck to idle for a minutes to clear out the excess diesel in the combustion chambers.

As to people letting the truck "just do it's thing," that's one way of looking at it. But I'd rather stay in the know when the truck does its thing to allow the regens to finish when they are supposed to and keep the fuel out of the oil. But that's just me.

 

Thre is plenty of UOA's posted here of trucks before and after being deleted and the fuel dilution is non existant after the delete. It may not be from an uncompleted regen but the regen itself does cause fuel dilution, that has been proven. Shutting down the active regen mid cycle without idle time definitely dumps fuel into the crack case, those are my findings as well as others here.

Ford can care less how many miles our engines will run as long as it makes it past the warranty period. From a business stand point, it's in Fords best interest for a vehicle to need costly repairs after the warranty period because that equals more money on parts and service and in some cases a new vehicle purchase. If these trucks lasted 30 years and 1 million miles Ford would not make much profit.

I feel the people that have the DPF screen enabled in the newer trucks want to know when the truck is in an active regen to extend the life of their DPF and engine because those trucks don't have any warnings that it's taking place. The DPF itself is a consumable product and at some point it will need replacing and it's very costly to do so. So these people want to know when the truck is in a regen so they can get maximum miles out of the this expensive system.

 

If there was a problem with fuel dilution from regen, complete or incomplete, then there would be more problems in the news or other sites so stating it or even recalls. The population of this forum pertaining to the 6.7 engine, is probably less than 0.01% of the total vehicles Ford built with the 6.7. All to often we develop paranoia and blame sometimes the wrong problem. And the problem might not be regen but idling.

We each are entitled to our consensus as you have yours and i have mine. That is simple humble opinion. Through with the thread. I have stated my thoughts, ideas and theories. Ciao...

 

I would want to know the status simply to allow the EGT's to come down after a regen. That will allow the fuel to burn off or exit the cylinders.

While this really isn't a big deal, it is important to me so that I know what is going on.

I rarely regen but when I do I want to know it and I want it to complete.

 

The best way to know when your truck is in an active regen is to have a digital monitor or a smartphone/tablet with an app like Torque pro for example. Then you'll know when it's in regen when you reached your destination. Then after you put it in park, wait until you see the active regen shut off, let it idle to burn up the excess diesel and also to cool off the turbo. I like EGT1 to be 400 degrees the most but usually like it down to 350. All trucks are different because of many different factors like where driven, EGTs, fuel quality, driving habits, use, etc. Mine hasn't gone up to 100% in a long time since I started driving in T/H mode and lock out 5th and 6th gear when speed limits are low/traffic busy. I also used to use my EB more on two hills but usually don't now. I'm currently at 300 miles out and soot load is at 25%. But the last regen it was higher because of more lower speed driving on flat roads w/no hills/city driving. My regens usually go from 420 some to just about 500 miles. My soot load usually burns down to 0.0%. The last regen was 28 miles long, my longest. I keep track of them but the notebook is in my truck. My soot load was nowhere near 100, it was in the 60s I believe and it went early. I'll have to look tomorrow and report back. The newer trucks I believe don't notify the driver that the truck is going into regen.