NX4510 CEL and limp mode

[finn1]

The problem with this is it totally falls apart without a well trained technician. In my case, a clogged DPF led to a forced regen at dealer #1 and lecture about using 'bad' fuel. When it clogged again after 10 hours and wouldn't regen, I took it to dealer #2, who eventually diagnosed a bad turbo oil seal, which was leaking enough oil to clog the DPF but not enough to register on the dip stick.

So your argument holds no water. The electronic diagnostic system only showed a plugged DPF. It took a sensible mechanic to find and fix the cause. If the DPF was not there, I'm sure the seal could have continued to leak oil for a very long time, with no negative effects. Instead, it plugged the DPF, put the tractor in limp mode and out of service for almost 2 months and counting.

Turbo seals that leak don’t automatically heal by running longer. I’m sure you’re simply guessing when you say it would have run for a long time while leaking.

In the case of this thread, he had a bad common rail injector. Ever seen what a power cylinder looks like after running with a bad common rail injector. Clue: it isn’t pretty and frequently requires a new long block assembly.

 

[JimR]

Turbo seals that leak don’t automatically heal by running longer. I’m sure you’re simply guessing when you say it would have run for a long time while leaking.

In the case of this thread, he had a bad common rail injector. Ever seen what a power cylinder looks like after running with a bad common rail injector. Clue: it isn’t pretty and frequently requires a new long block assembly.

Why would a bad fuel injector that is spewing too much fuel cause a blown long block?

 

[Kioti Dave]

Update..... since new injector installed, have had 3 auto regens at 5, 12 and 11 hours. Still think there is an issue as I was going 30 to 40 hours between regens. Will see how it progresses.

 

[JimR]

Update..... since new injector installed, have had 3 auto regens at 5, 12 and 11 hours. Still think there is an issue as I was going 30 to 40 hours between regens. Will see how it progresses.

Did they do a run up and shut down test on your injectors? It is possible that you DPF is so dirty that it can't burn off. Mine had to be removed and cleaned. It was plugged up really bad. I got 57 hours before my last regeneration.

 

[Kioti Dave]

Did they do a run up and shut down test on your injectors? It is possible that you DPF is so dirty that it can't burn off. Mine had to be removed and cleaned. It was plugged up really bad. I got 57 hours before my last regeneration.

Jim, I was thinking the same thing. How was yours cleaned out? Yes they did the test on the injectors. Only one was out of tolerance.

 

[JimR]

Jim, I was thinking the same thing. How was yours cleaned out? Yes they did the test on the injectors. Only one was out of tolerance.

All I know is that they had b.vto remove it, take it apart and cleaned it out somehow.

 

[rademamj1]

There are a number of ways to manually Regen or clean a DPF. The best and most common way, is to simply bring it to a diesel shop with a DPF thermal baking unit.

The DPF which is mainly ceramic, will be baked for 18 to 24 hours at high temperatures, to convert the diesel particulates (DP) to a fine ash. Then it will undergo a 1 hour high-pressure power wash to clean the ash out. Typical cost runs $250 - $350 depending on where in the country you are located. The West coast shows the higher costs

You can reattach the DPF back on the tractor, and reconnect all wires and sensors. This process can take a fully plugged DPF rated at 200% plugging down to about 5% or less. If you give the DPF to a Kioti dealer who is knowledgeable about the DPF, he will most likely follow the above procedures.

Look for diesel engine shops along major interstates, and most big cities where the big haul truckers commonly bring their DPF units for cleaning. The cleaning procedure is no different for a Kioti tractor DPF or say a Peterbilt DPF unit.

I am not advocating any specific DPF cleaning shop, but i just choose this one, as an example of what these businesses can do.

Western DPF Services | Home | Oklahoma City DPF Cleaning

 

[JimR]

There are a number of ways to manually clean a DPF. The best and most common way, is to simply bring it to a diesel shop with a DPF thermal baking unit.

The DPF which is mainly ceramic, will be baked for 18 to 24 hours at high temperatures, to convert the diesel particulates (DP) to a fine ash. Then it will undergo a 1 hour high-pressure power wash to clean the ash out. Typical cost runs $250 - $350 depending on where in the country you are located. The West coast shows the higher costs

You can reattach the DPF back on the tractor, and reconnect all wires and sensors. This process takes can take a fully plugged DPF rated at 200% plugging down to a 5% or less. If you given it to a Kioti dealer who is knowledgeable about the DPF, he will most likely follow the above procedures.

Look for diesel engine shops along major interstates, where the big haul truckers commonly bring their DPF units for cleaning. The cleaning procedure is no different for a Kioti tractor DPF or say a Peterbilt DPF unit.

I am not advocating any specific DPF cleaning shop, but i just choose this one, as an example of what these businesses can do.

Western DPF Services | Home | Oklahoma City DPF Cleaning

That is pretty much what my readings were everytime it messed up 200%. After it was fixed it was low single digits.

 

[Kioti Dave]

Update..... since new injector installed, have had 3 auto regens at 5, 12 and 11 hours. Still think there is an issue as I was going 30 to 40 hours between regens. Will see how it progresses.

Well, here we are 70 hours later, and 7 regens. Dealer picked up tractor and replaced turbo on warranty as it was leaking engine oil into intake. So the problem was 1 bad injector and a leaking turbo. Hopefully tractor will go back to a normal regen cycle of at least 30 or more hours.

 

[DieselBound]

Dave, by "leaking" what do you mean?