77 Merc 1175 no spark

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doomanmxz99

Seaman
Joined
Mar 25, 2008
Messages
71
Hey guys I am wondering what is the proper way to test the coils on my engine??? I dont have spark at 2 cylinders. I moved the plugs and wires around but still no change. I have ohm tested them and they all seem to be the same but was wondering if someone could let me know. Also should I start looking at the cdi box. Its a 1977 Merc 175 V6 Thanks
 
L

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: 77 Merc 1175 no spark

Here's the CDI test for the system. it sounds like a trigger

scan0005.jpg

scan0004.jpg
 
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doomanmxz99

Seaman
Joined
Mar 25, 2008
Messages
71
Re: 77 Merc 1175 no spark

Thanks for the great info will get on the tests and post my findings
 
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doomanmxz99

Seaman
Joined
Mar 25, 2008
Messages
71
Re: 77 Merc 1175 no spark

Started to check wiring and found several stator wires that were bad. Have new stator coming. I think this might be the problem
 
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