QuestionQUESTION: Please help me i have a 2003 yzf600r (not an R6) its turning over but will not fire, it has a new coil and still not getting any fire? The bike was droped on the left side enough to scrap the cover over the stator but not enough to even touch the fairings, any help would be wonderful, thank you
ANSWER: Did the bike develop this problem immediately after it was dropped on its side? Or is this something that happened some time afterwards? Why was the ignition coil replaced and what other components have been checked so far? Is the battery fully charged? Was the bike sitting for a long time before you tried to start it?
I need this info before I can try to help you solve the problem.
---------- FOLLOW-UP ----------
QUESTION: i bought the bike non-running from a 17 year old kid, thinking i could get it running, i have never had the bike running, the kid bought a new coil because i friend told him the coil was bad, the coils on the bike aren't grounded on the bike. we grounded the coils and got one spark out of the bike about every 6 turn over but it is very weak. from what i understand the bike has sat for about 6 months after it quit running. the battery if new and fully charged. we have checked and there is not any power going to the wires going to the coils and the bike turns on healights are on and lights on dash are on. but no power to the coils and no fire. i bought the bike about 2 weeks ago. im trying to figure out what it is before i spend a small fortune buyin all this different parts since they are so expensive. oh and we pulled out the stator and there is one spot on it that smells burnt dont know if that info could help. thank you
AnswerOk, that's more like it - lots of info to go on now. :-)
The coils are not necessarily connected directly to ground, the only way to know for sure is to look at a wiring schematic for your bike. You can find one here: http://pdftown.com/Yamaha-YZF600R-Service-Manual.html
Because you probably don't know the events leading up to when the bike stopped working, this is going to be a difficult problem to trace, but one spark out of every 6 revolutions sounds like a problem with the ignition box. You will need a digital voltmeter or multimeter to troubleshoot this. Once you have the wiring diagram, switch on the ignition and see if you have power going to the box. Then crank the bike over while checking the output to the coils, then from the coils to the spark plugs. Somewhere along the way you will have a component with no output and that is the one you replace first. Without having a wiring diagram for your bike in front of me, I can't get any more detailed that that, sorry.
As for the stator, once you get the ignition problem solved and the bike is running again, use the multimeter to check the voltage at the battery with the ignition in the off position. You should get approx 12VDC. Then start the bike and check the voltage at the battery while slowly increasing the revs from idle to about 2,000 RPM. The voltage should increase to approx 14-15VDC as the revs pick up and then stay there even when the bike is revved higher. If you still only read battery voltage, then either the regulator/rectifier is blown and/or the stator is shot. There are three wires coming from the stator, use the AC volts setting on your meter to see if any voltage is present when the motor is running. If there is, then the regulator/rectifier needs replacing. If there isn't, the stator itself is at fault.
