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View Full Version : best plug for a 59ci merc



fs5
12-12-2010, 01:05 AM
what plugs do you guys run in your 59ci mercs over there?
i currently run ngk bp8h-n-10
my motor is a 55 seapro and they don't have a thermostat fitted and was wondering if you can get a colder plug for these motors.
i find my motor runs better ,when i hold it W.O.T.after a minute or 2 it seems to pick up a few more revs.
could this be plug related ?
thanks

Mark75H
12-12-2010, 07:20 AM
You want a hotter plug, not a colder