Cub 100 starting problems

[B-Brush]

hey guys neeeding some help here
my 100 has been working great plowing snow all winter last time i plowed it started very hard weather is warming up so i decided to try and start it again yesterday and its not wanting to start
when it does start after turning over like crazy it runs rough then quits
when i put this together last spring i replaced points, condenser , coil ,plug,
plug wire , and rebuilt the carb
i have always heard on here to check the ground so i will do that today
i guess what my question is do you guys think i could have got moisture in the points will that happen ? or does it sound like a fuel problem ?? ground ? any info would be great thanks in advance !!! Bob

[JOHN SCHUTTE]

After it starts, how long does it run before it dies?

[B-Brush]

not very long maybe a min or two seems to run rough at first and just when i think its gonna be ok it quits then it is very hard to start again just turns over like crazy

[B-Brush]

tried starting fluid too dosent seem to help it either gonna start or its not thats why im leaning tward a spark issue im thinking maybe all that snow plowing allowed some moisture into the points but not sure if that would cause this ??

[JOHN SCHUTTE]

I would check the fuel line and fuel filter for blockage first. Sometimes rust can from the fuel tank can cause a blockage. Second, I would check/replace the ignition coil. Sounds like it is breaking down. I don't know how to check a coil, but I am sure someone else does. Third, check your timing along with your points. Information on the procedure can be found in the Tech section.

[young enthusiest]

"turns over like crazy" if it's spinning abnormally fast, a burnt exhaust valve can cause extremely hard starting and running. Check compression with your thumb over the plug hole.
Good luck finding and fixing your problem!

[Matt G.]

Originally Posted by young enthusiest

"turns over like crazy" if it's spinning abnormally fast, a burnt exhaust valve can cause extremely hard starting and running. Check compression with your thumb over the plug hole.
Good luck finding and fixing your problem!

That's not necessarily going to tell him much...I once had an engine that easily passed the 'thumb over the spark plug hole' test but wouldn't start. It turned out the piston was cracked.

B-Brush-

We are all grasping at straws because you haven't given us a whole lot to go on. Do you have good, consistent spark? Is the timing set right? Do you have fresh, clean gas in the tank? Good fuel flow to the carb?

[B-Brush]

Thanks for the help guys turns out to be the coil works sometimes and sometimes it dont just bought it in the spring and i know the coil on my O is the original coil guess kohler aint what it use to be like everything else these days its really a bummer to as now i have wasted 40 dollars and cant afford a new one thanks again for the help !!!

[Dave R]

Go to your auto parts store and get a coil with a built in resistor for 12 volts. Try it, I see no sense in paying $40 + for a coil from Kohler. I know, I did the same thing, mine didn't work so good either. A parts store coil probably cost $15.00 or so. Better yet, borrow one off a vehicle and see what happens. You need one with a resistor so you don't burn up your points.
Dave

[Matt G.]

The coil for an old air-cooled VW has an internal resistor and will work on a CC.