HELP! Cub Cadet 108 W/ K241 not running

Possibly a sticky valve. When the engine warms up the clearances tighten and deposits on the valve stem and/or guide cause it not to close well. I'd try some Marvel Mystery oil in the gas and maybe a little Seafoam sprayed into the carb while running . That will usually clean them up.

okay thank you ill try it now

nope it still does the same thing i really dont understand why it isnt running right

just double checked the carb and everything is set where needed to be runs for maybe 1minute30seconds than dies

check your fuel pump if you have one

Check your flow from the gas tank to the carb. Not just a quick "few seconds" check but a longer time to see if the flow is restricted.

You *may* be getting enough flow to fill the bowl but the running engine uses more gas than line will flow.

Jeff

There is no fuel pump on this tractor

Try removing the high speed mixture screw and check to see if the tiny holes in it are clear. Then check to see if the passage between the two sets of holes is clear. If that doesn't help I would bet that there is dirt in a passage somewhere in the carb, providing the carb is adjusted properly.

You did set your points with a timing light didn't you?

Checking points tomorrow or soon don't have a timeing light

gravelyman66 said:

Checking points tomorrow or soon don't have a timeing light

Click to expand...

Any motorheads/gear heads in your neighborhood? Everybody I grew up with had a timing light ( I guess I'm showing my age of 50 years old :fing20: )

There is a little pop off cover on the right side of the engine ( shrouding for flywheel ) that will show the "S" on the flywheel when the light fires. If it's not perfectly centered in the hole, adjust the point opening clearance ( on the opposite side of course :banghead3 ) until that stamped letter is centered.

well dad had a timeing light he just cant find it so i may go to my gandfathers house to see if he has one ordering a head gasket for it tonight the old one was shot

gravelyman66 said:

well dad had a timeing light he just cant find it so i may go to my gandfathers house to see if he has one ordering a head gasket for it tonight the old one was shot

Click to expand...

Spend the extra dollar or two to get the real Kohler head gasket. The "cheap" ones do NOT have the sheetmetal at the bore, only the exposed cut gasket material.

The "real" Kohler gaskets have the sheetmetal to help reduce the chance of hot gases blowing out the head gasket.

I can get a picture if you're not sure what I mean :fing32:

sure id see a picture if you dont mind

if none of that helps try the little rod that moves your points make sure it can move freely... i ran into this problem on one of my tecumseh motors that rod that opens the points would end up getting stuck when the motor was hot

thank you if none of this works im gonna take it up the road to a guy that fixes these and have him diagnose the engine and maybe just have a complete rebuild

Sounds like you've gotten a lot of good advice... But look for the "S" through the hole in the shroud instead of the "T".