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Kohler ech 749

Discussion in 'Mowers and More' started by backhoelover, Aug 21, 2019.

  1. backhoelover

    backhoelover SERVICE MANUAL MASTER

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    got a kohler ech 749 efi that is running so rich it’s getting gas in oil. Hooked up software and not seeing any problems. Was testing pump pressure and injectors leakage until I found out new hose testing adapter had a leak . Any other tech ran across this ? Engines has new muffler and o2 sensors put in few months ago.
     
  2. Onan18

    Onan18 OPE Sponsor

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    Do a ECU reset and TPS learn and see where you are. Thing about the EFI is it learns bad habits. If the engine was run with a plugged air filter for a prolonged time and then a new air filter was installed the mixture will be WAY too rich.
     
  3. backhoelover

    backhoelover SERVICE MANUAL MASTER

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    cool thank you. have you did the kohler efi class yet. everything i sign up they cancel cause too small of a class
     
    Onan18 likes this.
  4. Onan18

    Onan18 OPE Sponsor

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    I have not taken the class but the Deere dealership I served my apprenticeship with is a Walker dealer. Walker has been mostly EFI for 20+ years now so I am pretty familiar with the systems.
     
    Last edited: Sep 5, 2019
    I saw a lot and backhoelover like this.
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