Bad engine miss under load

jnw

Forum Newbie
Joined
Mar 20, 2014
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Troy-Bilt "Bronco" Kohler 20 hp 2012 year
The mower belongs to my elderly neighbor. She purchased it for me to mow her yard.
First year ran great. Next year developed a miss after running 20-30 minutes. At idle no miss.
It must be put under load to miss. It will finally just quite running. It will restart but not easily.
Once started and put under load same thing over again. Lowes picked it up to repair and said nothing was wrong with the mower.
I asked if they put a load on the motor and they said no.
Now it is my problem.
What I have done.
New plug, new gas filter, new air filter, fresh gas, charged battery.
The mower has less then 25 running hours.
 

Rivets

Lawn Royalty
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Mar 11, 2012
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Sounds like a fuel problem to me. If it came into the shop, I would remove the carb, clean and rebuild it.
 
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