Hi all. Working on a W9 that I found which hasn't run in over 30 years. I have honed the bores, and installed new rings, and gone over most things in the motor. I have completely dismantled the carb, cleaned out all the ports and assembled again with a new carb kit and to the adjustments as suggested in the workshop manual. I have had the magneto serviced and it is going good. I have made up new steel pipes from the tanks and checked out the fuel bowl.
My problem is when I started it it would backfire and miss and ran awful. It run better with nearly full choke and will not idle (runs all the time at high revs).
Since then I have tried adjusting the carb but nothing makes much of a difference. I have installed a whole other carb but it's exactly the same. A good flow of fuel is running into the carb. I have tested the leads and cap on the mag (running copper leads). I have swapped the mag, plugs, cap and leads from a good running tractor. Mag timing is right. I have checked the governor and controls. Nothing makes any difference to how it runs. Obviously it's running lean the way the choke has to be on but I don't seem to be able to adjust the mixture. Also why won't it idle - are they both related? I've been trying to work this out for a couple of days now but it has me stumped. Any thoughts would be appreciated. Thanks. Cameron
My problem is when I started it it would backfire and miss and ran awful. It run better with nearly full choke and will not idle (runs all the time at high revs).
Since then I have tried adjusting the carb but nothing makes much of a difference. I have installed a whole other carb but it's exactly the same. A good flow of fuel is running into the carb. I have tested the leads and cap on the mag (running copper leads). I have swapped the mag, plugs, cap and leads from a good running tractor. Mag timing is right. I have checked the governor and controls. Nothing makes any difference to how it runs. Obviously it's running lean the way the choke has to be on but I don't seem to be able to adjust the mixture. Also why won't it idle - are they both related? I've been trying to work this out for a couple of days now but it has me stumped. Any thoughts would be appreciated. Thanks. Cameron