Question about 2003 Yamaha YZF-R6

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Getting no spark at all four spark plugs. checked all wiring and grounds. what should I do or where should I look or check?

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  • Contributor
  • 8 Answers

Probably your CDI they supply the electricity to the plugs.

Posted on Oct 14, 2013

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4 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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ruskinbikesh
  • 180 Answers

SOURCE: I have no spark at

1. The on/off button on the right switch housing could be off. Turn it on
2. The on/off button could be faulty.Take apart and use test light to see if the switch is working by turning it on and off and see if power crosses the connection with the switch on
3. The ignition switch could be faulty. Test with test light to see if your getting power to you coil
4. The stator provides the power. Use Ohm meter, black to ground(green), and red to white wire, then red to yellow wire. the reading should be the same for the white and yellow wire. example: 288 and 288
5. The signal generator/pulse pick-up, send the signal to the cdi. Use ohm meter , black to one end of the wire and red to the other end of the wire, should read 000. if anything else the wire is broke.
This wire is usually black with a red stripe or red with a black stripe.
6. The cdi sends signal to the coil, to fire on time and advance and retards the fire as the motor revs and decelerates. Can be tested but not fixed, must buy a used or new one.
7. The coil provides the spark. Easiest to put a working coil on and see if it fires, if it does, then your coil is bad and just needs replaced.
8. Make sure if its on the kickstand that it is in neutral. Its a safety switch.
9.Make sure you have a good battery.Most local auto parts stores load test them for free

Posted on Nov 30, 2010

sisadsl
  • 1508 Answers

SOURCE: I have a 1996 xj600

could be a bad wire or plug cap they have a resister in them, each coil fires two plugs, so if the other one works off that coil the cdi is probably ok.
pull the caps off and check the resistance from the plug wire back to the coil ground, they need to be the same, the wires are moulded into the coils so if one has high or open resistance-new coil required

Posted on Apr 09, 2011

  • 339 Answers

SOURCE: my bike is cranking over but wont start.. iv put a

have you checked that you have compression? remove the spark plug and put you finger over the hole and try starting the bike your finger should be pulled into the hole
and how old is the fuel? it starts to break down after a few months

hope this helps

John

Posted on May 23, 2011

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