Air Pump
- With engine at normal operating temperature, inspect all hose connections for leaks. Check for pump noise and belt tension.
- Stop engine and disconnect air line at air control valve. Connect hose to a pressure gauge. Connect tachometer to engine.
- Start engine and run at idle speed. Gauge should register more than 1.64 psi (.12 kg/cm2 ) with engine at 800 RPM. If pump pressure is below specification, replace air pump.