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back fire during start

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Old Jul 14, 2012 | 11:21 PM
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Default back fire during start

my 98 fatboy backfires during start. i sprayed carb cleaner and when I tried to start, fire came out of carb and a loud backfire from exhaust. prior to this i adjusted my clutch. I don't know if this has something to do with the backfire
 
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Old Jul 14, 2012 | 11:36 PM
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Did you have the key on when you adjusted the clutch? If not then your clutch ignition timing is 180 degrees out and is causing the backfire. Why would you spray carb cleaner in the carb. How much did you spray? You should give the carb cleaner time to evaporate before trying to crank the bike.
 

Last edited by ghostrider69; Jul 14, 2012 at 11:38 PM.
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Old Jul 15, 2012 | 01:54 PM
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Originally Posted by ghostrider69
Did you have the key on when you adjusted the clutch? If not then your clutch ignition timing is 180 degrees out and is causing the backfire. Why would you spray carb cleaner in the carb. How much did you spray? You should give the carb cleaner time to evaporate before trying to crank the bike.
I don't know wither to Laugh or feel sorry for that response..


.
 
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Old Jul 15, 2012 | 02:09 PM
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Originally Posted by oct1949
I don't know wither to Laugh or feel sorry for that response..


.
Just laugh. It's good for the soul.
 
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Old Jul 15, 2012 | 02:10 PM
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"clutch ignition timing is 180 degrees out and is causing the backfire"



Huh...never would have thought of that....
 
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Old Jul 15, 2012 | 02:18 PM
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It's the carb cleaner igniting.
 
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Old Jul 15, 2012 | 02:42 PM
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Originally Posted by Mark_H
"clutch ignition timing is 180 degrees out and is causing the backfire"



Huh...never would have thought of that....

Me neither.
I would have checked the tires for correct air pressure first.


Bob
97 Heritage
 
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Old Jul 15, 2012 | 08:27 PM
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i let the bike sit overnight to dry carb, still not starting.
 
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Old Jul 16, 2012 | 02:03 PM
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Then in accordance with the line of answers so far...

It could be Ur turn signal oil is low in the right rear...




..
 
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Old Jul 18, 2012 | 11:01 AM
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Seriously guys..no need to be a$$holes. He is in dire need of a solution. Ignore those guys, all you need to do is switch to syn3.
 
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