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Volkswagen
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1990
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Passat L4-1984cc 2.0L DOHC (9A)
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Repair and Diagnosis
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Maintenance
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Tune-up and Engine Performance Checks
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Air/Fuel Mixture
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Specifications
Air/Fuel Mixture: Specifications
AIR/FUEL RATIO
Adjustment specification
[1]
0.7%
Checking limits
0.3 - 1.1%
[1]
Ignition timing
,
idle speed
and CO need to be adjusted together to prevent driveablity problems.