Cdi and coils, anyone know how to test?

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loganlejeune

Recruit
Joined
Oct 9, 2012
Messages
5
I have a 2009 yamaha 25 ive ruled out all possible fuel problems and changed plugs, im trying to figure out why its bogging down, does anyone know how i can test the cdi and coils to see if they are operating correctly?
 
9

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
8,877
Re: Cdi and coils, anyone know how to test?

Yamaha service manual has all the steps and specs
You will need the proper test equipment also.
Peak reading voltmeter made for these ignition systems or a DVA adapter used with a regular meter

Regular timing light should show if your timing is advancing and in spec
 
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