Vanagon F4-1915cc 1.9L (1984)
Air/Fuel Mixture: Testing and Inspection
Checking and Adjusting Idle Speed and CO%
CAUTION: It is important to follow work sequence when checking and adjusting idle speed and CO value
1. Check ignition timing; if necessary adjust
Idle stabilizer bypassed
Oxygen sensor connected
2. Check idle speed; if necessary adjust
Idle stabilizer bypassed
Oxygen sensor connected
3. Check CO value; if necessary adjust
Idle stabilizer connected
Disconnect oxygen sensor wiring connection with ignition OFF
Adjust CO value corresponding to local altitude. See shaded area of graph.
Reconnect oxygen sensor at electrical connection.
Preliminary conditions:
Engine oil temperature min. 6O°C (14O°F)
All electrical equipment must be turned OFF (radiator fan must not run)
Throttle valve switch must be ON at idle
CAUTION: Ignition must be switched OFF before connecting tester
Work sequence
