220 hp efi Magnum cold fouling addresed
Posted: Jun 20, 2013 8:12 pm
NGK BU8H plugs(On-line: $1.84) are semi-surface gap and don't have the big well alongside the electrode to collect fuel/oil. Replaced heat sensor as it seemed enrichment circuit was on while engine was warm. New sensor has mounting crush material insuring positive thermal conductivity. So far, so good.