Question about Motorcycles
No spark comes out when there is no battery. If battery installed bike runs but the battery is not charged back while running.
Sounds like a charging problem.
Either the alternator or the regulator.
Posted on Dec 27, 2013
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Posted on Jan 02, 2017
SOURCE: 1974 honda cb550 will not run?
• The first thing to do with ANY engine that has sat for any longer
than a couple of months is to dump ALL the fuel in the tank and
carb(s). ALL OF IT !! You'll want to refill with some high priced fuel
that has fuel system cleaners (Like Chevron with Techron) not becasue
you need high-test fuel, but because you need the cleaners. It's ether
that or disassemble the carbs and clean out jets you can't find much
less see. Your choice. The carb kits alone will cost you about $50 so a
tank of high-test is looking pretty good, huh?
• Now the fact that you tried to crank the engine with old fuel has fouled the sparkplugs. All of them. Go buy all new sparkplugs.
Posted on Mar 21, 2009
SOURCE: good evening sir, I have
1998 to 2002 have problem with plug to voltage regulator/rectifier which is under seat. connectors in plug overheat and bike stops charging the battery. you will see if connectors have been hot and will need to be replaced if they have.
once replaced check bike charging with multimeter at battery,should make 13.5 - to 14.5 volts just above idle. if not will need to test stator and regulator.
Posted on Aug 11, 2010
Find the reg/rect. check the AC voltage going in, should be about 18-26v & 3000RPM. If you have voltage check the out put Red and frame should be above battery voltage.If not turn off engine and check voltage at reg/rect Red wire (+) and Black(-) if fitted could be conected through body to frame..It should be at battery voltage.if not check for burnt or dirty conectors on the red lead and or the black lead if fitted or the mounting bolt for the reg/rect.
If you have battery voltage and AC voltage at the reg/rect suspect the reg/rect. some units have an extra wire that can be an ignition feed that has power on it when the key is on, but sure these dont have it.
If you dont have AC voltage check the (usualy) yellow wire some can have 1 or 2 wires. If it has 2 wire check voltage across both, if it only has one check yellow and the frame.
Posted on Sep 18, 2010
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