Question about 2003 Sachs Roadster 125 V2

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No ignition changed cdi unit. still no ignition. any ideas? wayne

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  • Anonymous May 16, 2009

    ye tryd that thanks, but thieres nuhn goin 2 ignition at all... no light either?

  • moschino1229 May 17, 2009

    ye thanks tryd that everys ok part from no voltage at the coils wats so ever or the ignition connectors. would the regulator rectifier stop the ignition coming threw the ignition barrel terminal? or would i have 2 get a new wiring loom for her? thanks for ur advice and hear from u again soon. ta.. wayne

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Hi and welcome to FixYa,

As in most bikes, the CDI is dependent on the other parts of the ignition system. Check the connection / status of the other parts:

  • terminal of the ignition coil - should have a pulsating high AC voltage from the CDI. Tested alone, the ignition coil should have 0.1 ~ 0.3 ohms from terminal to ground and 3 ~ 5 kilo ohms high voltage to ground;
  • pulser coil - should have very low pulsating AC voltage fed to the CDI. Depending on the brand would be 50 ~ 500 ohms;
  • IGN + 12 - supplied to the CDI through the Engine Stop Switch;
  • ground - ground.

Postback results of checks.

Good luck and thank you for using FixYa.

Posted on May 15, 2009

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Posted on Jan 02, 2017

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