Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

720 onan help


daveb

Recommended Posts

Hey need help. My 720 is only running on one cylinder. It has new plugs and i have good blue spark on cylinder that quits,pulled the head off (bolts were tight but head came right off). I cleaned everything off and put back together, started and ran ok till i revved it up and the same cylinder dropped out. any thoughts? valves are opening and closing

Link to comment
Share on other sites

well went out tonight and changed plugs from one side to the other and the dead side followed the plug. new champion plugs and one bad one. guess i will get a pair of autolites.Thanks for all the responses. Dave

Link to comment
Share on other sites

  • 4 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Who's Online (See full list)

    • Jac
  • Recent Status Updates

    • gwiseman

      gwiseman

      As you know SimpletrACtors.com has changed some recently. Working through this so PM me with questions, suggestions, and/or challenges you have. Appreciate your patience and feedback.
      · 0 replies
    • gwiseman

      gwiseman

      Site programming updates were made 3/23/2024. As a result some things have changed including dues payment options. We will continue maintenance and work with technicians to regain credit card payment option and clear up minor challenges. On positive it appears attaching pictures is now easier. Good day. Gene 
      · 1 reply
  • Adverts

×
×
  • Create New...