New 6.4L diesel

[gemini5362]

JEEZZ!!!

I'm not sure why post #28 wasnt enough info to explain it in better detail, but KICK was right on how they do it.. Also, if you get to that point...........well, lets just say you had plenty of warnings... No you cannot override it. You will be able to pull over, let it cool, then try again to your hearts desire.. But, you will continue to damage the engine and aftertreatment system.. I can assure you that Dodge, GM and anyone else producing a diesel for '07 emmisions is paying attention and taking notes for their calibrations to make the same adjustments.. Of course, I understand that might not be enough for some...

To put it quite blunty, its a safty strategy to protect the truck from an ignorant driver. This will also keep from setting things on fire due to this ignorant driver.. Of course, thats just my personal explaination of it..

I agree with you 100 per cent about the other automakers taking notes. I have been led to understand that they use similar exhaust emission controls. So I would assume that they are probably going to have the same problems.

I am curious what warnings a driver would get before it happens. I am sure you would have a warning on your dash that it is going to happen and to pull over. What warning would you get before that to let you know that you have a problem that needs to be serviced. I went back after I wrote this and reread post #28 You mention a fuel injector leaking that the driver should have been aware of. I do not know enough about truck fuel injectors so I am asking this question. If you had an injector that did not seat correctly and had a leak it would leak fuel into the exhaust system I would assume. As long as it still opened up properly when you pulsed it would that engine still not run close to normal. The other instance was a cracked turbo shaft leaking fluid. How would you the average driver diagnose these problems if you had them. ?

 

[HGM]

You would have a missfire or rough running condition with a injector problem. If it were a turbo, you would likely have excessive smoke on a regular basis, lack of power, possibly a surge.. My point is that as the driver of the truck, you would feel something wrong..

 

[KICK]

generally if an injector doesn't atomize the fuel properly but is capable of injecting the fuel into a cyclinder with good compression, the engine will run rougher and will have either white or black smoke , depending on particular situation.

If a turbo seal fails, it can possibly cause the engine to run away.

will definitely smoke out the exhaust.

most of the time when a turbo fails followed by the seal, by that point the turbo has seized and you have a noticeable loss of power and exhaust smoke.

 

[DirtHauler]

ULSD / SMOG. . . . . We just ordered a new Pete cab/chassis w/cummins 600 hp engine, was shocked at the new "soot" box" under the cab, dealer must service it every so many thousands of miles. They have to open it up and vucuum the white ash out! Exhaust temps in 400+ degree range, calculated welded pipe from the turbo to the tips....no clamps, no flex, no mufflers, no mess with! And this truck will be used for construction, avoid high grass?? Hear the Cat engines are a bigger nightmare!

 

[HGM]

ULSD / SMOG. . . . . We just ordered a new Pete cab/chassis w/cummins 600 hp engine, was shocked at the new "soot" box" under the cab, dealer must service it every so many thousands of miles. They have to open it up and vucuum the white ash out! Exhaust temps in 400+ degree range, calculated welded pipe from the turbo to the tips....no clamps, no flex, no mufflers, no mess with! And this truck will be used for construction, avoid high grass?? Hear the Cat engines are a bigger nightmare!

Normal exhaust temps are in the 400*F range at the tips.. Temps in the pipe are much higher.. But dont forget that a gas burner has the same temps in its cat... Really, its not that big of a deal is the system is working properly and no one messes with it...Thats why its a solid pipe..

 

[KAB]

ULSD / SMOG. . . . . We just ordered a new Pete cab/chassis w/cummins 600 hp engine, was shocked at the new "soot" box" under the cab, dealer must service it every so many thousands of miles. They have to open it up and vucuum the white ash out! Exhaust temps in 400+ degree range, calculated welded pipe from the turbo to the tips....no clamps, no flex, no mufflers, no mess with! And this truck will be used for construction, avoid high grass?? Hear the Cat engines are a bigger nightmare!

Here are a couple of articles that actually list max temp of 1000 degrees. (also good information on how the DPF being clogged warnings will work. I would guess that Fords exhaust temperature warning will not be that much time since it would be an unexpected event.)
e T r u c k e r ---TRUCKERS NEWS -- the number one lifestyles magazine for over the road truckers.
http://www.diesel.org/news/convention_2006/Navistar_International.pdf

One presenation I saw indicated a slightly lower NORMAL operating temp at the END of the exhaust system.

The Gov't has also mandated cleanings should not be required prior to 150,000 miles. (International has also listed hours).


Also,
The from what I have read on the 6.4 shooting flames, that would not be a normal burn off of soot. It was caused by a leaking injector or oil (due to improper warmup of the truck?) Ford recalls Super Duty Trucks After Tailpipe Fires The fix was to check for excessive exhaust temps.

Kurt