1978 v175 black max no spark on 1,2,5

MARB415

Cadet
Joined
Jul 17, 2011
Messages
17
After a day of fishing the motor died and after 20 min it started back up and ran fine so when I got home I started checking everything the compression is between 105-110 on all cylinders got fuel so when I checked the timing I noticed that it is way off and that spark is not jumping 7/16 gap on cylinders 1,2,5 so I'm thinking that the trigger might have took a dump or could it be the switch boxes any help would be appreciated also if anybody knows a good place to look up testing procedures for trigger and switchboxes thank you
 

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
Re: 1978 v175 black max no spark on 1,2,5

Ignition Troubleshooting Guide, free download on the Support page of CDIElectronics.com

One of the best guides for all O/B ignitions, and CDI parts are some of the finest.
 
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