1975 Models
Connect tachometer to engine. Warm engine until normal operating temperature is reached. Stop engine. Pull choke knob out fully and restart engine. Fast idle speed should be within specifications. If fast idle speed is not within specifications, bend choke rod.
NOTE:
On 1975 pickup, unplug connector from coolant temperature switch and ground both terminals before checking or adjusting fast idle speed.
1975 FAST IDLE SPECIFICATIONS
| Application | RPM |
|---|---|
| Pickup | 3000-3500 |
| RX3 & RX4 | 2800-3500 |