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HELP!!! Bike backfiring

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Old May 24, 2008 | 10:32 PM
  #1  
chubba1973's Avatar
chubba1973
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Default HELP!!! Bike backfiring

Here is my problem. I put a S&S super E carb on my 883. I run the smallest possible jets {060} The plugs are screaming eagle and are clean. Could it be timing? The bike backfires very, very bad. Please Help!
 
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Old May 25, 2008 | 09:20 AM
  #2  
megawatt's Avatar
megawatt
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Default RE: HELP!!! Bike backfiring

If your engine is backfiring through the carb, that is usually due to a lean condition. Backfiring out the exhaust is usually due to a rich condition.
Check with S&S about guidelines for initial jetting for your engine.
Be sure to tell them about any modifications done to the engine, exhaust, ignition, compression, etc.
 
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Old May 25, 2008 | 09:22 AM
  #3  
sqdealgeorge's Avatar
sqdealgeorge
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From: Eagle River WI
Default RE: HELP!!! Bike backfiring

What year sportster? Are you using a VOES switch?
 
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