Inliners International Forums General Discussion Engines Running lean on #5 cylinder?

THE VALVE IS SUNK IN THE HEAD, COMMON WITH LEADED GAS ENGINES, YOU SHOULD HAVE HARDENED EXHAUST VALVE SEATS INSTALLED AND REPLACE ALL THE EXH. VALVES AT LEAST. # 5 CYLINDER IS PROBABLY DOING MOST OF THE WORK NOW AND HENCE RUNNING A LITTLE HOTTER. TIME FOR A REBUILD........ GO 250 IMO