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Home >> Eagle >> 1982 >> Eagle L4-151 2.5L >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Distributor >> Vacuum Spark Delay Valve >> Description and Operation >> Forward Delay Valve

Forward Delay Valve

PURPOSE
On some models, a vacuum spark advance forward delay valve is added to the vacuum advance circuit to improve driveability and lower emission of hydrocarbons. This valve gradually applies vacuum to the vacuum advance unit diaphragm.
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