Question about Harley Davidson FLSTC Heritage Softail Classic Motorcycles

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Bike shuts off enxpectedly

Bikes runs great and idles with no problem. Occasionally it loose power and shuts off completely. After I pull over I can re start it within 2 or 3 tries of the start button and again runs fine. It happens on the Highway at 70 mph and at traffic light at idle. It appears to be a little more frequent when the bike is warmed up. Thanks Roberto

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  • Contributor
  • 52 Answers

Just a guess, have you checked the ignition coils? One may have a crack in the wound wire. When it warms it opens then closes when it cools down. There are a number of things that can cause your problem, but I would start with the ignition system.

Posted on Feb 15, 2014

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Posted on Jan 02, 2017

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SOURCE: 2002 Yamaha V-Star Classic 1100 Will not run over 70 MPH

Hi,
The first thing you need to check is the air filter. Sometimes critters can get into the airbox when a bike sits for awhile. Sounds crazy, but it has happened to me. If nothing is blocking the filter, give it a quick clean since you have it out.
Next things to check:
Faulty diaphragm
Improperly adjusted fuel level
Clogged or loose main jet
Faulty fuel pump
You may not be able to check these on your own, but these are the next likely culprits.
Hope this helped

Posted on Mar 11, 2009

SOURCE: Idle increase when bike warms up

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Posted on May 15, 2009

  • 62 Answers

SOURCE: Shuts off spits and sputters

Check for vacume leaks first. Rubber lines..gaskets to carbs ect. Also remove and blow out your fuel line to tank and change out filter. Hope this helps.:)

Posted on Sep 08, 2009

  • 5 Answers

SOURCE: sitting at a traffic light idling heard a loud

sounds like a camshaft chain broke. remove camshaft covers and check the cahin on both cylinders.

Posted on Aug 29, 2010

  • 3567 Answers

SOURCE: Hi, I have a 1981

This sounds like an air leak ahead of the carbs. Air that hasn't gone through the carbs is leaning the fuel/air mixture. Cracked rubber fittings, "O" ring seals, gaskets, and clamps between the carbs and the cylinder may not be sealing well enough. Note that a bad head gasket, bad valves or loose spark plug can also let air enter. The problem will get worse as time goes by. Do a compression check to check the valves.. Burned valves and cracked rubber seals are normally the culprits. Usually, all the valves need is to be re-lapped to provide a fresh face on the valve and valve seat. Check the site below for parts. www.babbittsonline.com

Posted on Mar 23, 2011

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1 Answer

St 1100 loose power occasionally and runs uneven what could be the reason ?


Hi, Marthinus the following applies to carbureted also fuel injected models and the usual suspects are:
1. Severely discharged or damaged battery, 9 volts or lower.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
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13. Gas cap is not venting properly or fuel tank venting system blocked.
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15. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
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For more information about your issue and valuable free downloads that you need please visit the websites below. Good luck and have a nice day.
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1 Answer

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1 Answer

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1 Answer

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1 Answer

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