Author Topic: How can you tell when your CDI unit has failed?  (Read 2669 times)

Offline El Dopa

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How can you tell when your CDI unit has failed?
« on: January 25, 2007, 03:20:14 AM »
There's a lot on this board about failing CDI's and carrying spares. All seems like good advice, but....

...if you're stuck in the middle of nowhere with a bike that won't go, how can you tell that it's the CDI that's fritzed, and not a 'something else' type problem? What are the symptoms?

Offline gsxr400 racer

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How can you tell when your CDI unit has failed?
« Reply #1 on: January 25, 2007, 09:35:28 PM »
power to your coills proper oms to pick up power to the cdi battery charged good plugs and still no spark  :stickpoke:
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol

Offline doqq

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How can you tell when your CDI unit has failed?
« Reply #2 on: January 28, 2007, 11:07:03 AM »
how would i test power to the cdi?  Which wires am i probing?

Offline gsxr400 racer

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How can you tell when your CDI unit has failed?
« Reply #3 on: January 28, 2007, 10:54:08 PM »
Im not gonna do all the work for you brother get a manual and trace the wires from the hot(key switch ) to the cdi ,cdi to the coils ect......Just highlight the wires that go to the cdi on a sheet of paper or the actual manual my manual looks like a rainbow brite comercial!
cheers
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol