Pre-1995 Suffolks fitted with the A98 (Black alloy block) engines will run perfectly on unleaded fuel if you change the original spark plug to an NGK BP-4. This is the Atco/Qualcast approved modification. Post 95 Suffolks were designed to run on unleaded with no adjustments necessary.
pleasant
August 2008
howtomendit.com for free repair help, information and advice.
