A tachometer - preferably an instrument with a fine scale (0-3000rpm, say) - can be useful for tuning the carburettor. When it is connected to the coil, the slightest twist of the mixture-adjustment screw alters the engine speed. To adjust the mixture, set the screw to give the highest possible rpm consistent with the smooth running of the engine.

Guides that use

Stroboscopic timing

A static timing check with the engine stationary is never fully accurate. It does not allow for ...

Diagnosing faults in automatic transmission

Although they are considerably more complicated than manual gearboxes, with control and operating...