100hp mercury... no spark

Joined
Feb 11, 2009
Messages
8
I have a 1988 inline 4 cylinder 100hp 2 stroke mercury whith no spark. im not real familiar with boats so if anyone has any advice or caoud put me on the right path i would appreciate it. thank you
 

Laddies

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Sep 10, 2004
Messages
12,218
Re: 100hp mercury... no spark

Here's a simple test for it if you have a DVA or OHM meter.
scan0003.jpg
 

Laddies

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12,218
Re: 100hp mercury... no spark

Do you want a engine wiring diagrham or a schematic for the ign. system.
 
Joined
Feb 11, 2009
Messages
8
Re: 100hp mercury... no spark

yes that way i can follow the wire and know for sure what parts are what, also like i said i dont know much about boats.. and i have qiuckly found an outboard isn't much like a car motor
 
Joined
Feb 11, 2009
Messages
8
Re: 100hp mercury... no spark

thank you so much for your help i think it will deffinatly help us figure out whats wrong now. thanks again
 
Joined
Feb 11, 2009
Messages
8
Re: 100hp mercury... no spark

i was wondering if it is low on oil will it prevent it from sparking... and is it ok to use regular 2 stroke oil or is there a special oil
 
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