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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 26030
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I just gor a exmark it has a kohler command pro ECV740 EFI.

Customer Question

I just gor a exmark it has a kohler command pro ECV740 EFI. SEEMS LIKE ITS NOT GETTING FUEL . And runs and sluggs. Or luggs like a misfire. Has been running fine. New to this type mower.
Submitted: 6 months ago.
Category: Small Engine
Expert:  Curtis B. replied 6 months ago.

I see question is still open! If it were mine, I would run a cylinder balance test. Loosen the spark lug wires, and with engine idling, remove one wire at a time, engine should continue to run. If engine dies when one wire is removed, the opposite cylinder is not firing. Check it for spark. If it has spark, swap the fule injectors between cylinders and see if problem changes cylinders. If it stays at same cylinder, cylinder has problem maybe compression or valves. If it changes places, replace the fuel injector.