All Models
- Start and warm engine to normal operating temperature. Ensure front wheels are in straight-ahead position, transaxle is in Neutral, and all accessories and cooling fan are off.
- At high altitudes (over 3900 feet), disconnect and plug White striped (Yellow on 1.5L Colt) vacuum hose from distributor vacuum diaphragm. Start engine and check base ignition timing.
- If incorrect, loosen distributor nut and adjust ignition timing. At high altitudes, reconnect White (Yellow) striped vacuum hose. Start engine and check curb ignition timing.