Merc 60 3 cyl need help1

bmorril2

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Joined
Aug 19, 2009
Messages
3
Have 1995 3 cyl Merc, was low on power found no spark at top plug.Local parts dealer suggested swapping coil from middle plug.Then I lost that coil ,only spark at bottom plug .Is this a bad switch box??? Appreciate any help.
 
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