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  #1  
Old 07-21-2018, 10:49 AM
Danny Wolfe Danny Wolfe is offline
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Location: Alabama
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Default Engine stalls!

i have a cub cadet 2166, 16hp Kohler engine. It starts just fine when cold and will run for about 30 minutes and when working the mower under a hard load, the engine sputters and dies...OR it seems to be worse under a load....it will run with choke on for a bit and then dies. Obviously starving for fuel. I was able to shoot a small amount of Starting Fluid and make it run...it ran fine for about 15 more minutes, then died. I have a new ignition coil, spark plug, fuel pump, all new fuel hose from the tank to carb, and still have this issue. A dealer mechanic suggested that the CAM may be worn and causing the fuel pump to not sufficiently pump enough fuel. He suggested to put an electric fuel pump on the engine. This mower has only 300 hours on it so i am doubting the cam wear. Could this be an overheating issue? The cooling fins are clean on the engine. The muffler is in good condition. (not blowing against the frame) I also noticed one time that the mower was on a SLIGHT incline when it started to die. Is this vapor locking? SO, IM TOTALLY OUT OF OPTIONS to try...SUGGESTIONS PLEASE? THANKS SO MUCH FOR YOUR HELP, GUYS!!
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Old 07-21-2018, 11:15 AM
J-Mech J-Mech is offline
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Pull the carb and clean it. (Buy a kit for it.)
Pull the tank and clean it.
Pull all the fuel lines and blow them out.
Install a new filter.
Put all new fresh clean fuel in.
Reinstall the carb and re tune it.

If that doesn't fix it, you likely did something wrong, or didn't get the carb clean. If you have to choke it to make it run, it's a fuel issue.
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Old 07-21-2018, 11:59 AM
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bllwnkl bllwnkl is offline
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^^what Jonathan said^^
You didn't mention if you cleaned out the fuel tank. That's where my issue was.
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1976 IH Cub Cadet 1250, 1978 IH Cub Cadet 1250 W/Hydraulic lift
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Old 07-21-2018, 12:20 PM
dale c. dale c. is offline
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plugged gas cap vent ? try running it with the cap loose .
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Old 07-21-2018, 12:22 PM
Danny Wolfe Danny Wolfe is offline
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Yes, i failed to mention that i did clean the tank, and installed a new fuel filter as well. I feel confident that this IS a fuel issue. I also failed to mention in my post that when i replaced the fuel PUMP, it took a LONG time to get it to start and deliver fuel. Im very much a novice, so i could have done something wrong! Thanks for your help and suggestions.
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Old 07-21-2018, 12:25 PM
Danny Wolfe Danny Wolfe is offline
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Quote:
Originally Posted by J-Mech View Post
Pull the carb and clean it. (Buy a kit for it.)
Pull the tank and clean it.
Pull all the fuel lines and blow them out.
Install a new filter.
Put all new fresh clean fuel in.
Reinstall the carb and re tune it.

If that doesn't fix it, you likely did something wrong, or didn't get the carb clean. If you have to choke it to make it run, it's a fuel issue.
Thanks, what is your opinion about having cam wear therefore causing the pump to not pump fuel correctly? I just find that hard to believe. I did replace all fuel line, cleaned tank fuel filter, clean fresh fuel, etc....i m sorry that i wasn't clear on these things....i also meant to say that when it starts sputtering and running rough after getting hot or running for about 30 mins, that is when i pull the choke and it will run as if its not being choked. Before that it runs as it should. And, idk if it matters or not, but when i replaced the fuel pump, i did use the metal spacer that is about 1/8" thick. I do not remember if the mower had one before. Would that additional spacer make any difference or cause this issue??
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Old 07-21-2018, 01:41 PM
J-Mech J-Mech is offline
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Quote:
Originally Posted by Danny Wolfe View Post
Thanks, what is your opinion about having cam wear therefore causing the pump to not pump fuel correctly? I just find that hard to believe. I did replace all fuel line, cleaned tank fuel filter, clean fresh fuel, etc....i m sorry that i wasn't clear on these things....i also meant to say that when it starts sputtering and running rough after getting hot or running for about 30 mins, that is when i pull the choke and it will run as if its not being choked. Before that it runs as it should.
Worn cam with those hours is not likely. It's highly, highly unlikely. When you change a pump, if you don't bleed the air up to the pump, it takes a while for a new pump to prime. Also takes a while for it to fill the carb bowl. This is normal.

Pull the carb and clean it out, put a kit in it and retune.
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

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