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I have replaced the battery, battery cables, changed the oil, new sparkplugs, and the bike will turn over but won't start. The bike hasn't ran in years I picked it up off of ebay.
Engines don't run because they either have no gas in the combustion chamber or no spark to ignite it. So determine which is missing.
First, validate that you have a spark at the spark plugs
If you pull the plugs again, you can not only check for spark, but see if they are 'wet' from getting gas.
But most likely, your problem may be associated with the carburetors - sitting for long period turns the gas to varnish and they are probably gummed up.
Solution is to strip and clean them.
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As I'm sure you suspect, changing the oil and sparkplugs should have nothing to do with the symptoms you've outlined. The symptoms "seem" to indicate a problem in the charging system. Either the battery is in need of replacement or the regulator is fried. One way to test which is at fault is to jump start the bike (be VERY careful doing this as a car battery will fry your system if you connect it wrong). Once it is started, remove the jumper cables. If you need to rev the engine slightly to keep it running, this is normal as a dead battery is a big draw on the electrical charging system. If you can, have a friend hold the bike RPM's around 1500 and disconnect one of the battery leads on the bike's battery. If the bike continues to run (my suspicion is it will), you have a bad battery. If the bike will not run, then the charging system is the culprit. It could be something as simple as a regulator or as complicated as the generator (inside the engine).
if the bike will not turn over you mean it doesnt crank? because if it doesnt crank over then its a starter issue and could be a simple as a blow fuse, but then why did the fuse blow? ( starter going bad)..... or it could be the starter solenoid itself, and this is where i believe you might find the fuse. response feedback appreciated.
1. open hood
2. disconect battery
3. remove sparkplugs cable
3. use a torque ranch to remove sparkplugs (turn to left)
4. replace with new sparkplugs
5. connect cables
6. connect battery
Remove both sparkplugs from engine. Plug them back in the sparkplug cables and let them rest on the engine.
Make sure your battery is well charged.
Check for sparks while kick-starting...
Interchange the sparkplugs in the cables:
-Same plug give sparks: replace the spark plugs.
-Same side of engine sparks: interchange the low-voltage connector at the ignition coils.
Give it a try:
Same engine side sparks: Replace the defective ignition coil.
Other side of the engine sparks: Check the circuit harness for loose connectors, and/or Clean-replace the breaker points ( left side of the engine carter ).
sounds like a poor ground issue, pull out the headlight and check all connections in there, your turn signals are on seperate feeds than the lights but they will probably share the same ground/earth in the headlight
• 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.
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