Question about Harley Davidson XL 1200 C Sportster Custom Motorcycles

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Bike cut out.no spark,occasionaly starts but cuts right out.

The bike was running down the road and just cut out.ther

Posted by Anonymous on

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  • Harley Davidson Master
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Hi Anonymous, answered in previous question

Posted on Apr 18, 2015

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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DickCanFixIt
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SOURCE: engine misfire and cutting out when running at normal engine temp

Make sure your fuel tank vent is not plugged. To see if this is the problem, the next time the bike starts acting up, stop and open the fuel tank. If you hear a whoosh of air being sucked in you know your vent is plugged.

The C8HA is still available, it is NGK stock number 2168.
Good luck.

Posted on Feb 20, 2009

  • 1 Answer

SOURCE: kawasaki gpz 1000 rx 1987 model

Running well at high revs would indicate that all the fuel and air it needs are getting to the engine and you also have a good spark. Probably no problem with air and fuel filter ( if fitted) or sparkplugs.

Running hot, and bad idling are signs of a lean air fuel mixture. The engine is probably not getting enough fuel at low revs.

This could be caused by an air leak between the carburettors and the engine. Check that the vacuum line to the fuel tap is properly secured at both ends. It is behind the fuel line at the tap.

Get a a short length of hollow plastic tube and use it like a stethascope - put one end to your ear and move the other end around your carburettor mounts with your engine revs as low as you can get, and listen for any sucking noises that would indicate a leak. Look for cracks in the rubber inlets.

The other possibility is that there is an internal blockage in the idling jets or idling fuel circuit. This is where dirt tends to lodge because the jet dimensions and passageways are very fine - The high speed jets are much bigger and dirt often just passes straight through.

Try a little bit of choke while the engine is warm to see if you get a stronger low speed response. If so that would point to an internal blockage.

Posted on Mar 21, 2009

  • 2 Answers

SOURCE: Engine cuts of after it runs about 3 or 4 min. If

what kind of machine?

Posted on May 08, 2009

czaa
  • 4536 Answers

SOURCE: I have a Harley Davidson Dyna Superglide T-Sport

u shocked or vibrated the ignition system-inspec wiring for cutz n looseness-takes time n patience-concentrate on the plug wire n where it connecs to coil-may need to take tank etc off-could be a fuse too-many good repair manuals r retailed

Posted on Sep 05, 2009

Testimonial: "Thank you very much for the prompt advice. :-)"

herbmeister
  • 7 Answers

SOURCE: Engine cutting out when open throttle. YAMAHA NEOS 50cc MOPED

i had a simuler problem with my honda cr 250 moto-x bike it would start fine and you could keep it ticking over with the throttle(i have deliberatly unscrewed the tickover in case i come off,it will cut out) when i got on it,it would go for about 400-500 metres then splutter and die and not start again for around 5 mins. i immediatly knew it was a fueling problem. so after stripping the carb and giving it a good clean out i was baffled when i got back on and it still done the same. i then dismantled the fuel tap cleaned it all out and put it back together and tested it,it was very very slow so i unsrewed my fuel cap a little and was greated with the familur gush it should deliver. problem solved! the vent in my fuel cap had crystalised up,so the fuel was coming out but the air was not getting in,causing a vacuum and slowing down the flow and basically emptying the carb quicker than it can fill back up!!! clean your carb,fuel tap and any vents in your cap or tank. if this does not work then your bike must be over fueling or low on compression.

Posted on Sep 18, 2009

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