Thx for your replies. I checked the plugs - NGK BP6HS which I assume are the correct ones for a 1973 +8 with std SU carbs - and they looks fine. Coffee latte coloured and dry which indicates a correct mixture in my opinion. What do you think?


Finn. 1973 Morgan +8. 1959 Austin Healey 3000 BN7 2-seater. 2009 Mazda MX-5 2.0 PRHT.