Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
meck

Where to start diagnosing?

Recommended Posts

meck

AC B10 is running good when I shut it down. Restart. It idles perfectly and slightly above idle. But give it any gas at all above that, and it stumbles and dies.

Does anybody have any hints on where to start in figuring this one out? If so, I would appreciate hearing them. All I've done to this point is check that the fuel line and filter are delivering gas as they should.

Share this post


Link to post
Share on other sites
chris87

i would start by replacing spark plug then checking for good spark and checking air filter. then check carb. i wouldnt think a compression issue because it idles good.

Share this post


Link to post
Share on other sites
HubbardRA

Open main jet 1/4 turn and see if that helps. If it is better, open it some more. Keep doing this till it responds like it should. After this you will need to go back and readjust the idle jet.

The tractor can idle good with the main nearly closed, since the idle circuit is a separate adjustment from the main jet. You may have picked up a piece of trash in the main circuit. Most times opening the jet need up some will allow the trash to go on through, then you can go back to the original settings.

Share this post


Link to post
Share on other sites
meck

Thanks for your quick replies. The spark is good, plug is good, and points are gapped okay. I was getting ready to open up the main jet when the starter/gen. belt broke. Good timing, huh? I'll try again tomorrow after replacing the belt.

Share this post


Link to post
Share on other sites
427435

Before you open the main jet, carefully (gently) turn it all the in counting the turns. If there is a bit of dirt in the jet, that may get rid of it. Then reopen the same number of turns plus maybe another 1/4 turn.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

  • Who's Online (See full list)

    • s_stephen
    • PhanDad
    • abu507
  • Today's Birthdays

    No users celebrating today
  • Recent Status Updates

    • Bubba1997

      Bubba1997

      Searching for a Sleeve hitch and breaking plow and other equipment if price is right and also a deck for a B1 thank you 
      · 3 replies
    • Dean McFadden

      Dean McFadden

      Good morning peeps! I’m always searching for helpful information with my AC collection. Hope to find out new information and pass on my own experience in restoration. Here are some pics of my babies. I’m still looking for front rims for the 410 so yesterday I put the 310 wheels on took it for a drive. Working pretty good but still needs some carb work. Gotta get the 310 running next. Have a great day!😁
       

      · 1 reply
  • Adverts

×