L 4600 Black smoke

mike l4600

New member

Equipment
L 4600
Jul 1, 2015
1
0
0
Midway Texas
I have a 2014 L 4600. I put some deisel in it that I didnt know had water in it. I ran it about 10 minutes then tractor died. I notice the fuel filter had water in it. I drained the bad fuel, installed new filter and good fuel. Bled the air after it was running I noticed the tractor had a miss, loss of power and blows black smoke. I replaced one injector and cleaned the rest. Still no change. I cleaned the injectors again reinstalled, while reinstalling I botice the line going to the pucmp connector was lose. I tighten it up and restarted tractor it blew a lot of black smoke so I turned it off but the tractor would not shut off. I close the air intake off and it died. What can I try to solve this.
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
28,306
4,856
113
Sandpoint, ID
That would be called a run away, most likely cause is an injector that is dumping fuel uncontrollably.

Sounds like when you cleaned the injectors you might not have gotten something right or you have a bad injector, pull them all out and send them to be tested and cleaned professionally.