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Mariner outboard engine 4cylinder what type of spark plugs do I need

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Marine spark plugs are of the anti foul type so it will have 2 or 3 or no side electrodes ( earth point) and this is to prevent fouling of the plug across the gap. They are available from most car spares shops but you can get them from the outboard shop . The reach ( length of thread is very important) and you can get a range from cold plugs to hot plugs depending on the age of you motor and how much fuel or oil you use . Talk to the marine dealer for exacting advice.

Posted on Aug 07, 2013

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Posted on Jan 02, 2017

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SOURCE: 1988 mercury outboard engine has no spark from the spark plugs?

check the coil maybe it needs replaced

Posted on Jun 05, 2012

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