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1987 xr-4 150 hp v-6 merc

im in process of finding why i have zero spark and i am in process of elimination here ive done alot of checking of the electrical system . ive OHM'd the coils, the trigger, the rectifier was the only thing bad here . ive havent done the following the stator,low-high speed spark advance module, idle stabilizer and the two boxes i dont know where i should focus my energies. the boxes are from what a i read nearly never the issue. should i buy one new coil and use it to see if the coils are bad>? thanks patrick
 
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Re: 87 xr-4 150 v-6 merc

Have you elimated the kill circuit? Disconnect the black/yellow wire at the switch boxes and check for spark.
 
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