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Old Feb 3, 2018 | 05:31 PM
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I have a 2005 Harley Davidson Spotter Roadster 1200 that I'd carbeurated. I started my bike this morning to take it to a meeting I had to be at for work. I let bike sit and idle for a while so the motor could warm up, when it was time to leave, I noticed that the throttle was kind of sluggish, as was acceleration. My rpms would amp up, but my acceleration would stay sluggish. I also had issues with backfires and excessive drag. Any ideas?
 
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Old Feb 3, 2018 | 05:44 PM
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If you had the choke on the whole time it was warming up you might have fouled your plugs.
 
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Old Feb 3, 2018 | 06:05 PM
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Cold weather caused some moisture in gas?
 
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Old Feb 3, 2018 | 06:32 PM
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seafoam !

https://www.walmart.com/ip/Sea-Foam-...3=1077&veh=sem
 
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Old Feb 3, 2018 | 09:36 PM
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I found with the Honda VLX I had before the Sportster, if I used the choke other than to just start the bike it would do what you're describing as HOTLAP stated, fouled the plugs.

I used the choke, very seldom needed after I rejetted, and only in cold (mid/low 30's) temps to start the bike. After it was running I used only the throttle to keep the rpms up, and rode off. If I didn't it would run like crap for a couple of miles.

Fuel injection is nice...
 

Last edited by firehawk6; Feb 3, 2018 at 09:38 PM.
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Old Feb 5, 2018 | 12:40 PM
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Originally Posted by HOTLAP
If you had the choke on the whole time it was warming up you might have fouled your plugs.
This would be my first guess, pull the plug and see what it looks like

Originally Posted by tmultra
Cold weather caused some moisture in gas?
This or possibly water in the gas from you last fill up would be my second guess. Seafoam as cvaria said should take care of this.
 
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