Mid 70's 65 HP no spark

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Davis 65

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Oct 25, 2007
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New member .Just bought a 16' runabout with 65 hp .cannot get a spark from coil. are there any common sore spots to this ignition system?tried "cotrol box "and coil ,had spark at coil 1 time ,but cant get it to spark anymore. The guy who sold it to me said it ran OK 3 weeks ago ?
Thanks, Davis
 
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Laddies

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Re: Mid 70's 65 HP no spark

The mid 70 650s used 2 different ign. system so we need to know the serial number of if it has a distributer or 3 coils
 
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Davis 65

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Oct 25, 2007
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5
Re: Mid 70's 65 HP no spark

S/N 7020228 it has a distributor with some kind of pickup (no points )
I am somewhat mechanically inclined but I am not familiar with this setup
 
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Laddies

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Re: Mid 70's 65 HP no spark

The normal problem with that system is the trigger (distributer body) if there is 12 volt to it, heres the CDI test for the system
scan0001.jpg
 
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Davis 65

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Oct 25, 2007
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Re: Mid 70's 65 HP no spark

No voltage across blue and black trigger wires.Checked with digital voltmeter .Have 12 volts at white/ black trigger terminal. Instruction sheet indicates bad trigger . What is the meaning of the term " DVA "on instruction sheet ?
 
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Laddies

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Re: Mid 70's 65 HP no spark

A DVA is a adapter the lets you capture and read peak voltage in the system Direct Voltage Adapter many newer meters have it built in. If you want to double check you findings on the trigger do the tes that it describes on the drawing
 
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Davis 65

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Oct 25, 2007
Messages
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Re: Mid 70's 65 HP no spark

thanks for all your help my outboard finaly runs. I was wondering what the right user manual is for the outboard?
 
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