JimR
Elite Member
I also was told that my.problem was probably bad fuel or biodiesel. They found the bad injector by doing a Run Up and Shut Down test on the injectors.
CEL DPF
- Thread starter todd92
- Start date
- Views: 18388
I also was told that my.problem was probably bad fuel or biodiesel. They found the bad injector by doing a Run Up and Shut Down test on the injectors.
OP
todd92
Silver Member
- Joined
- Nov 24, 2005
- Messages
- 129
- Location
- Hunterdon County, NJ
- Tractor
- Case Farmall 75A, Kioti NX5510HST, Kioti CK3510SEHC, Farmall M, MF GC2310 TLB
What is a run up and shut down test? I'm also looking for induction leaks.
JimR
Elite Member
I was told that it checks the output of the fuel injectors. Mine didn't pass the shut down test but the Kioti Rep said that it was okay as long as the run up test was good.
The Fred
Veteran Member
The induction test is done with a smoke machine to test the integrity of the intake system, if it has a turbo then pressure is used. I PM'd you two days ago to see if you wanted the info as I won't post it here.
Injector tests are done with the scan tool.
JimR
Elite Member
They did my injector test using a laptop and Kioti software.
Skeans1
Platinum Member
A quick down and dirty way to check for an out of balance injector is that cylinders exhaust temperature on the will be higher then the others. All injectors will have mechanical tips with a poppet if too much fuel is ran through the orifice in the nozzle (tip) will be enlarged causing an uneven spray pattern or worse over fueling that cylinder.
OP
todd92
Silver Member
- Joined
- Nov 24, 2005
- Messages
- 129
- Location
- Hunterdon County, NJ
- Tractor
- Case Farmall 75A, Kioti NX5510HST, Kioti CK3510SEHC, Farmall M, MF GC2310 TLB
10 hours of running hard, no idling, DPF light is flashing. I park it to regen. It goes to 1500 RPM stays there, never goes to 2300, then goes back to idle with CEL on. Since the DPF was at 4% when I got it back there is no way it got to 100%+ in 10 hours unless there is something else wrong. Induction leak, over fueling injector, bad DPF differential pressure sensor. Now how to get it diagnosed?
justman777
Platinum Member
Unfortunately, it sounds like another trip back to the dealer. I think 10 hours and it's plugged again blows the "bad fuel" argument out of the water. Something else is going on.
OP
todd92
Silver Member
- Joined
- Nov 24, 2005
- Messages
- 129
- Location
- Hunterdon County, NJ
- Tractor
- Case Farmall 75A, Kioti NX5510HST, Kioti CK3510SEHC, Farmall M, MF GC2310 TLB
Update, 2nd dealer is trying and seems to know what he is doing. Obviously cleared code and forced regen got DPF back to 0%. Now instead of handing it back to me is trying to figure out why it's plugging up or reporting being being plugged up so quickly. Tried to do the run up / shut down test and it's not letting him, so he's trying to get Kioti to figure out why. He has completely dismissed fuel issues. On the hunch I might be in for a similar experience to JimR, and the fact it was struggling with the disc harrow and I have work that's not getting done I spent a week comparing specs and shopping and brought home a new Case Farmall 75A. It puls the harrow like it's not there. It's quiet, comfortable, everything seems to work smoother. Best thing is NO DPF and NO SCR. I'm not totally off of Kioti yet, the CK has been flawless, and the only issue with the NX is this one. However, the dealer network, parts supply chain and corporate support of the dealers is sorely lacking. My neighbor, who let me borrow his truck and trailer to get the 75A and is a serious, large scale farmer and has millions of dollars worth of Case equipment just chuckled when he saw me pull up with the new tractor. "I see you finally decided to get a real tractor".
DieselBound
Elite Member
How many hours?
I'm at 500 hrs and I've had ZERO DPF issues, no CELs. My tractor runs a regen perhaps every 50 hrs or so. I try to keep it operating 1,800+ rpm, but it sometimes gets a bit of idle time.
Have to wonder whether there's an issue with sensor circuitry/wiring. DFP flow is monitored by a pre and post sensor. I'd figure that programming would handle cases of bad sensors, but perhaps not for flaky wiring?
I'm at 500 hrs and I've had ZERO DPF issues, no CELs. My tractor runs a regen perhaps every 50 hrs or so. I try to keep it operating 1,800+ rpm, but it sometimes gets a bit of idle time.
Have to wonder whether there's an issue with sensor circuitry/wiring. DFP flow is monitored by a pre and post sensor. I'd figure that programming would handle cases of bad sensors, but perhaps not for flaky wiring?