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1985 thundercraft merc io 140 hp after testing fuel pump i noticed my battery wire was very hot what would cause this ? short somewhere? and how do i find it? battery was only connected about a minute.
Just like cars or anything else, check the connection.
Loose, corroded, damaged cables cause heat. Clean, tighten (with a wrench), and replace if damaged any connection that is hot when cranking.
1985 thundercraft merc io 140 hp after testing fuel pump i noticed my battery wire was very hot what would cause this ? short somewhere? and how do i find it? battery was only connected about a minute.
