Vanagon F4-1915cc 1.9L (1984)
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Check RPM after 2 minutes, if necessary adjust with screw (arrow)
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Stop engine
Check CO and adjust if necessary, idle stabilizer connected:
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With engine OFF disconnect electrical connection at oxygen sensor (arrow)
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Start engine and check CO value
Checking spec = 0.3 ±1.1%
Note: If CO value is above 1.1% pinch crankcase hose.
CO should drop below 1.1%
If YES, CO adjustment is not necessary (engine oil dilution-change engine oil)
If NO, adjust CO (continue with procedure)
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Stop engine
Adjust CO as follows:
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Remove intake air sensor 2