63P3F11 4-16123456789Synchronizing the throttle valvesCAUTION:Do not adjust the throttle valve when it isoperating properly. Excess adjustmentmay cause poor engine performance.1. Remove the caps 1, and then attach thespecial service tool to the intake manifoldas shown.NOTE:For best results, use a vacuum gauge (com-mercially available), like 2 or 3 shown in theillustration, that has four adapters.2. Start the engine and warm it up for 5 min-utes.3. Attach the special service tool to sparkplug wire #1 4, and then check theengine idle speed.4. Check the vacuum pressure of all cylin-ders.Vacuum gauge: 90890-03159S63P42101S63P4220123Digital tachometer: 90890-06760Engine idle speed: 700 ± 50 r/minS63P42504Intake assembly and vapor separator
