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Engine missesElectrical |
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Oct 19th, 2009, 02:51 PM
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#1 |
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New Family
Ride: 2006 Softail Deluxe
Join Date: Oct 19th, 2009
Posts: 2
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Engine misses
Engine just started missing while riding. Misses at idle and at running speed. It does not seem to miss when I accelerate hard only when I maintain a constant speed or accelerate gradually.
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Oct 19th, 2009, 03:16 PM
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#2 | |
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Moderators
Ride: '03 FLHTCUI (Ultra Classic)
Join Date: Apr 4th, 2008
Location: Sugar Land, TX
Posts: 1,936
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Re: Engine misses
Quote:
No, then strange as it seems, check for leaks: Finding An Intake Leak - Harley Davidson Community Muffler Leaks - Harley Davidson Community TQ
__________________
 Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. >>Self Help Information and Tips<< click me! |
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Oct 19th, 2009, 03:55 PM
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#3 |
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Play The Throttle
Ride: 2003 FLSTSI
Join Date: Sep 8th, 2009
Location: Alabama
Posts: 167
My Mood:
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Re: Engine misses
One plug or plug wire. Plugs are funny that way. A leak would probably make it run rough but not miss fire.
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Oct 19th, 2009, 04:15 PM
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#4 |
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New Family
Ride: 2006 Softail Deluxe
Join Date: Oct 19th, 2009
Posts: 2
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Re: Engine misses
No mods. Replaced plugs. A friend suggested it might be the fuel pump regulator. It is also popping back into the air cleaner.
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Oct 29th, 2009, 02:27 PM
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#5 |
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New Family
Ride: 1994 Heritage
Join Date: Oct 29th, 2009
Posts: 1
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Re: Engine misses
Similar problem here. Bike was running fine, then after sitting 7 to 10 days, it started fine but quickly started to miss and pop through carb. Well, after rebuilding carb problem was still present. Installed new plugs and it ran perfect...for very few miles and then same thing. Checked the plugs again and they were very sooty. I have fresh fuel, new plugs, and rebuit carb. I suspect a weak spark condition. Any ideas on most likely cause of weak spark? What should I test first and how? Maybe a hotter plug?
Thanks Kev |
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Oct 29th, 2009, 05:10 PM
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#6 |
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Community Liaison
Ride: 07 Road King Classic
Join Date: Jun 21st, 2007
Posts: 20,467
My Mood:
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Re: Engine misses
Stay with the stock heat range plugs. Possible the plug wires need replacing being a 94. If you can test the resistance in the wires or just replace them with stock wires, they aren't that expensive.
__________________
Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me! |
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Oct 29th, 2009, 07:07 PM
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#7 |
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Moderators
Ride: 2009 FAST 103 Street Bob
Join Date: May 18th, 2007
Location: The Shires UK
Posts: 7,625
My Mood:
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Re: Engine misses
my Bob 09 does all the same syptoms - Bat tests fine, Coil Fine, Wires being replaced at £15 and new High comp Plugs to see if it helps if not new ECM is the diagnosis
 foot note my bob is far from stock but only the same as many on here but i ride mine like i just stole it
__________________
Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. >>Self Help Information and Tips<< click me! |
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Nov 1st, 2009, 11:19 PM
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#8 | |
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Moderators
Ride: 2009 FAST 103 Street Bob
Join Date: May 18th, 2007
Location: The Shires UK
Posts: 7,625
My Mood:
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Re: Engine misses
Quote:
__________________
Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. >>Self Help Information and Tips<< click me! |
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