Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
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Old Jun 4, 2018 | 03:20 PM
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Originally Posted by gerald martin
Thanks for all your answers. Found the problem. Its the vacuum piston in the carb. It does not go up when the engine is running therefore blocking air into the carb. Checked it out. the diaphragm has a rip in it. got a kit ordered

So in other words...even when you were "Full Throttle", you were NOT "Full Throttle"
 
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Old Jun 4, 2018 | 06:03 PM
  #12  
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Default 883 low

Originally Posted by multihdrdr
So in other words...even when you were "Full Throttle", you were NOT "Full Throttle"
that's right vacuum piston would not go up when throttle was opened. Just like running the bike with a completely plugged air cleaner
 
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