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Old 16 June 2007, 14:39   #1
MarkM's Avatar
Country: Netherlands
Town: Breda
Make: Scorpion
Length: 7m +
Engine: Evinrude 250 DI
Join Date: Oct 2003
Posts: 368
Spark Plugs

In the Evinrude 250hp DI, 2004 I use Champion QC12PEP plugs.

After say 60 hours the gap increases from 0,8mm to 1,6mm because the centre electrode shortens from 1,2mm tot 1mm and the ground electrode bends 0,6mm.

Is it possible to regap the plugs to 0,8mm instead of puting in new ones? That should be done after 100 hours or more.
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