cub cadet 129 with K321 14hp engine problems

[Gage mcdaniel]

Gage,That is not the stock engine..We are assuming it has run ok since being replaced..I work on a lot of different engines ,95% of the time it is fuel related..dirty carb,leaking carb gasket, old fuel line dissolving ,fuel system plugged with debris,...You said you changed fuel,does that mean it was very old fuel and hadn't run in quite a while? There are no instant answers just apply patience and be sure all is functional and clean as Matt said..

I just overhauled the engine about a year ago and rebuilt the carb last summer and the engine runs about 5 to 6 hours a week and recently i cleaned the carb to try to fix my problem and i have also changed the coils out with brand new ones

 

[Gage mcdaniel]

I just overhauled the engine about a year ago and rebuilt the carb last summer and the engine runs about 5 to 6 hours a week and recently i cleaned the carb to try to fix my problem and i have also changed the coils out with brand new ones

it did not fix the problem it still sputters

 

[gary noblit]

Gage,not to sound like a broken record.Do you have another carb you could try? And..a few weeks ago someone had a similar issue with a condenser breaking down..I've never had that issue before,I've had them fail totally but....??? Do you have an inline spark tester you could put on and run the engine to see if it is bright and consistent...

 

[Gage mcdaniel]

Gage,not to sound like a broken record.Do you have another carb you could try? And..a few weeks ago someone had a similar issue with a condenser breaking down..I've never had that issue before,I've had them fail totally but....??? Do you have an inline spark tester you could put on and run the engine to see if it is bright and consistent...

ok I will see if i have one

 

[rfunk]

the fuel was just changed 10 days ago and the air filter is new just got it a month ago

FUEL filter, I said. BTDT. Completely rebuilt carb on old Techomaster, same symptoms as you describe, fuel screen in sediment bowl was almost solid. Cleaned it and ran well!

 

[mike samack]

try a spark plug , i had an issue that stumped me untill i changed the spark plug

 

[Gage mcdaniel]

i finally found the problem it turns out the charge indicators nut was loose just enough to not make full contact and as i ran it the cord would shake just enough to not make contact

 

[gary noblit]

Gage, glad you found it....those damn simple things will get you every time!!!

 

[R Mass1]

i went to start my cub cadet 129 with a K321 14hp engine in it but its started and got it out of the garage and then went to move and it died multiple times and i cant figure out why it is not running right. doe anyone have any ideas on how to fix this problem

I had a similar issue a long time ago with my 149. First, make sure the gas is fresh (I use ethanol-free gas when possible and add STP Sta-bil when it sits over the winter). Take the fuel line loose and make sure you are getting adequate fuel flow at the carburetor. Of course, make sure you have spark as others have mentioned and that coil wire is not burned or against a hot engine surface. In MY case, as mentioned earlier, it turned out to be a blockage at the tank from a tiny piece of trash or something. I removed the fitting rodded out the fitting and the area of the tank where it attaches, replaced it, added a NEW fuel filter anyway, and have had zero problems since then. Just an idea because it is oftentimes something very simple. If it was running well the last time you put it up and doesn't run well now, then one has to ask the obvious question: What changed? Hope this helps! (another thought, you could also have water in your fuel; you may have to dump it and replace with fresh fuel; I doubt seriously that you need a 'new' engine as some have suggested; My 50-year-old Kohler has had normal maintenance and care and still runs like a champ today)