MX-5 Miata L4-1597cc 1.6L DOHC (1992)
Idle Speed/Throttle Actuator - Mechanical: Testing and Inspection
Air Valve Testing
1.
Drain engine coolant below level of air valve.
2.
Disconnect hoses and remove valve from intake manifold.
3.
Cool valve to 32°F (0°C).
4.
Mark shaft as shown on image.
5.
Warm valve with a hot air gun and verify that shaft moves in direction of arrow.
6.
If not as specified, replace valve using a new gasket and torque mounting bolts to 43 - 69 in lb (4.9 - 7.8 Nm).