BX2370 run away

[Ceppaglia]

I am as new to deisel engines as they come, so I’m a little worried.
I’m in WNY, and we are still very much in the winter season. Went to snowblow the driveway the other morning, it was about 20F degrees. I hit the flow plug for about 10-15 seconds, tractor fired right up. While it did start fine, it immediately started to run away. I shut the key switch off. After 30 seconds it died out. Think black diesel smoke.
I gave it a min, started up and ran fine to clear my driveway.
I went out yesterday afternoon, about 16F outside, same routine. Again, run away. Left the key switch on, died after about 30 seconds. It doesn’t get so high revving as to think it will explode, but it is high. I prob don’t wanna know the answer, but I need help

 

[William1]

Sounds like you are getting a oil puddle in the intake. Engine vent clear, oil level correct?

 

[Ceppaglia]

I’ll have to check those to make sure

 

[old and tired]

Since you are new to diesels; To try and stop a run-a-way, choke off the air intake. Stuff an old shirt or rags into the air filter housing.

 

[kevinj]

Since you are new to diesels; To try and stop a run-a-way, choke off the air intake. Stuff an old shirt or rags into the air filter housing.

If it was a runaway it would not stop by turning off the key.

I believe these start with the pump at full throttle. They do funny stuff on a cold start.

 

[imnukensc]

I believe these start with the pump at full throttle. They do funny stuff on a cold start.

No, they don't start with a full throttle. They're supposed to start with whatever the throttle is set at.

 

[kevinj]

No, they don't start with a full throttle. They're supposed to start with whatever the throttle is set at.

I will tell you since I have 3 Kubota's with mechanical injection that even at idle they rev up upon start then ramp down to where they are set.

 

[Ceppaglia]

I did read later on about stopping air flow. It seems like it ran until it ran out of fuel. It starts at where I have the throttle, typically.
This wasn’t revving up and settling, this just straight up ran. Oil level seems ok.

 

[whitetiger]

I will tell you since I have 3 Kubota's with mechanical injection that even at idle they rev up upon start then ramp down to where they are set.

All mechanical injection Kubotas will start and run at the RPMs where the throttle is set. There should not be any rev up and settle to the throttle setting.

 

[Russell King]

You may have bad injectors that are leaking or over fueling the engine. You can have them tested and repaired or just replace them. There are tests you could do to see the spray pattern. See post #3 in this thread

L2250 Injectors

Hey guys - I'm learning this stuff, I promise. But I don't know what a dirty injector should or would look like - if that is the problem I am having. :) I'll start off with the problem (trying to keep brief but give the info you all usually ask). Used my L2250 for several hours digging out...

www.orangetractortalks.com

If you get new ones do NOT get them from eBay or Amazon vendors they could be poor quality. Try to get OEM parts or rebuilt from a reputable repair company.

 

[North Idaho Wolfman]

I'm with @Russell King, sounds like you could have a injector issue.

Take a video of it doing it, post it on youtube, and give us a link to see it.