Gunson colortune 14mm

Gunson colortune 14mm The Tune-up plug for Petrol/LPG 2 amp; 4 stroke engines with single, twin or multiple carburettors or fuel injection systems. The original and best tool for seeing what&happening inside the combustion chamber of the petrol engine. It allows you to see the combustion and to adjust the mixture by colour. Fits most petrol engines in standard form with additional adaptors available for vehicles with alternative sized spark plugs. • Kit includes: 14mm Short reach plug | Hexagonal ad • Colortune will fit most vehicles • Kit complete with instructions • Extra adaptor sizes available separately