Troy-Bilt Pony Riding Mower engine popping while idling and running

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  #1  
Old 05-16-17, 08:30 AM
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Question Troy-Bilt Pony Riding Mower engine popping while idling and running

My mower was popping loud occasionally while idling. But when running it was ok. So, I gave it an oil change, new spark plug and air filter. Now it's worst!!! It's not only popping during the idle, but it's also popping while running, and it's more frequent. Help!!!

Troy-Bilt Pony Riding Mower
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  #2  
Old 05-16-17, 09:46 AM
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Without knowing the engine, I'd venture that you'= have a ninor air vent thatis clogged in the carburetor . . . . probably due to fuel additives being deposited (which is common when using 10% ethanol fuel.

My snowblower has/had this problem and besides for the popping, it would surge at idle; but would smooth out and run find when under load.

Someone else may have a quicker solution, but consider cleaning the carburetor and examining EVERY little port, vent, or orifice, and make sure it's clean.

Some may suggest using a spray cleaner; but that's usually just superficial, and doesn't get into the areas that are causing the problem . . . . and the problem may be an obstruction not much bigger than a grain of salt !

Some may recommend soaking and plowing out the passages; but I don't know the intricacies of your carburetor.

If there was a quickee solution, I'd reveal it.
 
  #3  
Old 05-16-17, 02:22 PM
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The engine is Briggs & Stratton, 17.5HP. Although I bough the mower couple of years ago from Lowe's, the engine has Model/Year: 2011.

I'll look for the carburetor cleaning instruction on Youtube.

I'm also wondering, I've been adding STA-BIL 2-Cycle or 4-Cycle Engines Fuel Additive Storage, and the problem started afterwards. Could be coincidence since my other push mower and trimmer doesn't have problem, yet.
 
  #4  
Old 05-16-17, 02:58 PM
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I would suggest giving it a strong dose of SeaFoam whcih will clean the minor buildup of varnish and probably solve your problem. Have a good one. Geo
 
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