Injector failure for 3rd time!

[rd_macgregor]

Today my DK45 injector rack broke for the third time. The first time, it stuck in the off position...wouldn't start and wouldn't run. A year or two ago, it stuck in the full-on position (very exciting!). Today it happened again. Rebuilding the injector rack, plus labor for extracting and reinstalling it comes to over a $1000. That is cheaper than brand new replacement, but, if this is going to happen every few years, then I'm ready to trade my Kioti in on some other manufacturer's offering. Very frustrating...and too often seems to happen in the coldest part of the winter.
Has anyone else with this vintage Kioti suffered this recurring issue? I thought once it was fixed, it would stay fixed!

 

[grsthegreat]

Thats weird. How old is the tractor. Mines a 2010 vintage with 1300 hours….
no issues at all.

 

[4570Man]

I would suspect water is getting in your fuel. Injection pumps aren’t very accommodating to that.

 

[Hay Dude]

How have you been storing fuel?
Where are you buying fuel?
Are you using any additives?

 

[jyoutz]

Today my DK45 injector rack broke for the third time. The first time, it stuck in the off position...wouldn't start and wouldn't run. A year or two ago, it stuck in the full-on position (very exciting!). Today it happened again. Rebuilding the injector rack, plus labor for extracting and reinstalling it comes to over a $1000. That is cheaper than brand new replacement, but, if this is going to happen every few years, then I'm ready to trade my Kioti in on some other manufacturer's offering. Very frustrating...and too often seems to happen in the coldest part of the winter.
Has anyone else with this vintage Kioti suffered this recurring issue? I thought once it was fixed, it would stay fixed!

You need to flush your fuel system completely. Most injector issues are caused by junk in the fuel.

 

[DK35vince]

Injector pump gear failure is a known issue here on many of the 2005 - 2008 Kioti models

 

[Amvcane]

Who rebuilt the pump? If they used new old stock parts I could see this happening over and over. The original gear teeth were prone to breaking.

 

[RickB]

See post #22 in this thread, it may be helpful.

Repair Common Kioti Mechanical Injection Pump Failure

As this sticky thread seems the most relevant place to post, here's yet another injector pump failure story (abridged version). 2006 Dk45SC 2200 hours: Started having starting problems first, occasionally requiring 2-3 turns of the key before fuel would flow. Suspected a relay issue. A few...

www.tractorbynet.com

 

[thepumpguysc]

Your wording is confusing..
Injectors don’t have racks unless u have a Detroit engine.
The racks don’t break, the segments do..
Depending on where u got it repaired and where they bought the parts, u might very well be getting NOS..

 

[rd_macgregor]

There is only one shop here that does injector repair (for all vehicles). I doubt they would source OEM parts, so are probably using Xecel (?) or other substitute. Fuel quality (including effects of low turnover) in a small place like this is always a suspect...though I have never had an icing issue in the filter.
I fired it up this morning to move it to a place where the tow truck could access it. I started right up, then ran fine for a minute... and suddenly accelerated to the top!! I managed to jamb it in 4th and stall it in a convenient place for the tow truck. I'll see what the shop says.
Thanks for the suggestions and links.

Bob