kohler pro 27 will not start cold without starter fluid.. help!

Discussion in 'Mechanic and Repair' started by woodlawnservice, Feb 23, 2013.

  1. woodlawnservice

    woodlawnservice LawnSite Senior Member
    Posts: 742

    The engine started to do his and finally has got where it will never start cold without starter fluid...any suggestions on what is causing this? I have good flow of fuel... I've cleaned spark plugs but I will replace just to make sure... new air filters... new oil...what could this be? Thanks...will spark plug gap affect this?
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  2. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Is the choke fully closing...???
    What condition are the sparkplugs..??
    If one is darker than the other...check your compression...normal is 160 to 180 psi..
     
  3. Landrus2

    Landrus2 LawnSite Platinum Member
    Posts: 4,811

    I had an issue with a kohler 25 hp in winter it was hard to start.i switched to a lighter oil and problem solved. :waving:
     
  4. woodlawnservice

    woodlawnservice LawnSite Senior Member
    Posts: 742

    Choke is fully closing... one plug may be slight darker than the other... motor only has 350hrs. As well
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  5. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Was this machine parked over winter ? Whens the last time it cranked properly ?
     
  6. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Might be time to remove and clean the carb..
     
  7. woodlawnservice

    woodlawnservice LawnSite Senior Member
    Posts: 742

    Its parked each winter. But I start it every few weeks... never has had ethonal fuel...its cranks fine..just wont start.... not unless I give it a shot of starting fluid
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  8. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    There are lots of things that can cause obstructions in carbs...
    Dirt..fuellines deteriorating..varnish...just to name a few...
    If everything else on your engine is correct..and you don't get enough fuel to start the engine when you apply the choke..
    Its probably some bad joo joo in the carb....
     
  9. woodlawnservice

    woodlawnservice LawnSite Senior Member
    Posts: 742

    What's best way to take apart and.clean with? Let it soak? Scrub it? I don't have ultrasonic cleaner. What do I use to clean it?
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  10. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Remove the carb...spray brake cleaner thru everything that looks like a hole..
    Don't spray anything that is rubber..they don't like brake cleaner..
     

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