MAZDA 323 diesel engine is a inline four-cylinder engine with a transverse. The cylinder block is made from cast iron, the cylinder head is made of light metal. The valves are driven by rocker arm from overhead camshaft. Valve clearance is adjusted by adjusting screws and must be checked and adjusted as part of the maintenance in the event of noise control gear or after engine repair. Toothed belt driving the camshaft drives and high pressure fuel pump (pump).