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Sportster Motorcycle General Discussion and Problems For discussing problems about your Sportster motorcycle that don't fit anywhere else.

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fp3, fuel injection, fuelpak, stalling, vance and hines

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  #21  
Old 28th April 2017
StevenGlock StevenGlock is offline
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Quote:
Originally Posted by sportsterdoc View Post
Intake leaks are very common, but not "normal"
Did you test, per post 9?
Unfortunnately I haven't gotten the chance. Tuesday is my day off, I will be doing my best to resolve the issue then.
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  #22  
Old 28th April 2017
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Fraser19 Fraser19 is offline
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Quote:
Originally Posted by StevenGlock View Post
I will definitely have to check that. It only happened to you when you let off the throttle?
My experience was similar, I thought it was throttle related. Just turned out the effects of force on the bike would cause the cable to come in and out of contact.

To be honest by batter cable comes loose all the time. I always keep tools on hand to deal with it.
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  #23  
Old 3rd May 2017
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One thing to check is for a carbon fouled spark plug. I had exactly the same thing happen. Turns out I had an intake leak on my rear cylinder. I had adjusted the mixture to run smooth which left my front cylinder running rich and fouling the plug. If your plugs are both clean then you know it's not that and you can move on to more trouble shooting. Takes a couple minutes.
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  #24  
Old 3rd June 2017
firewallsrus firewallsrus is offline
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I had the problem on an '05 883 and the $tealership wanted to rebuild the carb and/or replace the ecm as starters. The problem got worse gradually and when it got to the point where it would sometimes stall at idle (like freeze mid-stroke) I realized it was firing just a tiny bit early. A new crank position sensor (CKP) and 15 minutes of my time fixed the problem. There was a lot of problems with the CKP sensor on the '05 sportsters and HD never really acknowledged it, but surely they have fixed it by now.
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  #25  
Old 4th June 2017
StevenGlock StevenGlock is offline
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Just a quick update, turns out there was something wrong with the map I flased to my bike so I contacted vance and hines and they adjusted the map for me and now it runs awesome! Thanks to everyone for their help/input!
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