Fuel injected Kohler w 24 pin Bosch ECU

[VegetiveSteam]

Something else to try. Unplug the electrical connector to the coil on the side that isn't firing. Then turn the key to the on position. Turn the key off and check for codes. If you get a code, that would lead me to believe the wiring between the ECU and coil is fine and the ECU is fine. If no code shows, do the same thing on the side that is firing and again check for codes. It may give more questions than answers, but it may shed some light.

 

[jjreds01]

No codes with coils unplugged I'm headed for the ECU ground now

 

[jjreds01]

I opened up the ECU plug to find coil wires to test, cleaned everything up soaked w oil, opened up a shrink on the ignition wiring plugged it in and started it voila now good. Didn't see anything suspect. Put it back together we'll see how long it lasts