Jim Linville
New User
1940 JD "B" engine stops after 90 minutes of work load. Carb has been rebuilt/restored and Mag is timed and set properly. "B" starts and runs like a champ for 60-90 minutes and then loses power and stops running. It's impossible to restart the hot engine until cooled for 2-3 hours and then restarts without problem. Saw on another thread the exact issue with an "H" and a new condenser solved this problem. So I installed a new condenser. Today after 90 minutes of operating a Woods mower, I got the "B" to the garage and then accidentally stalled the engine backing into garage. Do you think the "B" would restart? Back firing, popping, scaring the neighbors but no start. I saw on another thread to open the gap on a spare spark plug and checking the spark. I open plug to 1/8 inch but no plug spark. I remove the #2 cylinder plug and saw a large white spark followed quickly by 2 very small sparks all in the same one revolution of the flywheel. I was frustrated and didn't check #1 cylinder. Shame on me.
I guess my 3 choices are, points, cap, or coil. I'm taking a poll to see which of these might be the most popular to change next.
I guess my 3 choices are, points, cap, or coil. I'm taking a poll to see which of these might be the most popular to change next.