Colortune is a unique mixture setting device and a detector of other mixture related problems. It is a spark plug, which runs the engine like any normal spark plug, but because it has a glass insulator, it allows the colour of the combustion flame inside the cylinder to show through andindicate the strength of the mixture.How Colortune works:Combustion at its most efficient produces a clear blue flame, various colours result in inefficient mixtures. Inside an internal combustion engine those same colours are present though not normally seen. With Colortune fitted in place of a spark plug, the... Read More

You don’t need reminding of the importance of proper wheel and suspension alignment and geometry in terms of handling, safety, and the unnecessary expense of replacing badly worn tyres, but how can you check it yourself?  The Gunson G4008 Trakrite Wheel Alignment Gauge is a simple drive-over gauge that indicates by means of a pointer if there is any sideways scrub of the tyre against the road surface, and in which way the adjustment should be made to rectify it. It is suitable both for cars and light commercial vehicles. Trakrite has a top plate which is mounted on rollers so that... Read More