xmark lazerz 28kohler EFI

[deere8300]

Engine spits and sputters when under a load. Won't miss any at all if you rev it wide open and don't move. Turn on PTO and put it under a small load and it starts sputtering. Checked fuel filter and it's fine

 

[mechanic mark]

http://www.kohlerengines.com/onlinecatalog/pdf/24_690_02_EN.pdf engine service manual, see pages 18 & 19 in troubleshooting section.

 

[catdiesel]

My co-worker has the same problem with his Kohler EFI, and it turned out to be a faulty ECU module. Dealer told him it is the third one he's had to replace.

 

[cashman]

Make sure that any wiring harness grounding connections to the frame of your mower are tight and secure and no rust. I've seen the EFI's do the same thing with a faulty ground to the ECU. Especially on a frame that was powder coated from the factory.