Question about Harley Davidson XL 1200 L Sporster Low Motorcycles
If your handy working on stuff you can find the problem. You need a test light and a volt OHM meter, and basic understanding on how to use both or collect a friend that knows some and you'all can figure it out together. First you need to remove the seat and the gas tank so you can get to the wiring and the battery. Realize that if the battery is low the engine cranking might be that the voltage is too low to let the inghtion come on. First check the battery as it should be 12.6 volts for a charged battery, if the battery is lower than 12 volts as it's cranking it could be below 9 volts and it won't spark, as the voltage is too low. If the voltage is low then you could jump start the bike with your car and with the car running the voltage will be even higher ( 14.5 volts ) and the bike should crank and spark if it's OK and if the plugs are in and thier not too wet from cranking it with the spark off, it'll fire up and run. If this doesn't happen. and theirs still no spark then your looking for real problems. Remember if you try something I tell you and you find something you need to ask me about all you have to do is add a comment and I'll be contacted by email that you need my help and I'll reply with a continued answer to your problem. I answer these problems cause I like to and helping you keeps me thinking and improving the answers I give so I want to help you till your running, and running right. Batteries go down as they sit and their still good but need to be charged up. It's wisest to charge the battery with a battery charger as charging the battery by running the engine puts undue strain on the charging system and could possibly wreak the charging system. I put a new battery in my bike every year as it's cheap insurance against charging and ingation system problems. Your battery as new as it is may only need to be charged or the warrentee may replace it. Lets say this is'nt the problem and with good voltage you still don't have aspark. You need both plug wires connected to a plug or the head or the spark will feed back the coil and possibly blown the ingition module. Bike bandit shows a picture of it but they don't have it for resale. You need to check the power wire to the coil to see if it's hot with the key on. anytime the key is on. the coil can be shorted but it's not likly as it ran the last time you ran it and they usally fail as it's running. ( overheat) If the wire is'nt the same as battery voltage ( measure with the voltmeter) then the wire is bad or the ingtion switch is bad or dirty or a blown fuse. If in doubt check all the fuses ( with the test light) a fuse can look good and be bad. they can look bad and they usally are. If you don't have a volt meter and you want to ride an old Harley you'll need a test light and volt mater and even the ones you get at a discount store are good enough to find the lack of power. any 12 volt ligh that lights as connected to the battery will work it's just the ones you can but at the store are so much easier to use. if you find something and need to ask somemore just ask buy adding a comment and i'll come back and help you somemore. John
Posted on Mar 27, 2011
Hello str... since most of those components are new and you indicate that the bike ran fine last year, I suspect that you have a corrosion issue, a poor ground, or a dead battery; or a bad ignition module.
Begin by charging up the battery. Then inspect each of the connections and if suspect at all, clean with some emery cloth and then reconnect.
If these routing maintenance steps do not solve your problem go to this link http://www.gwizit.com/harley/codes.php
thanks for choosing Fixya!
Posted on Mar 27, 2011
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Posted on Jan 02, 2017
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