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Home >> Volkswagen >> 2000 >> EuroVan Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Air Induction Systems >> Air Leak Checks
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Air Leak Checks

NOTE: Manufacturer recommends using Scan Tool VAG 1551/1552 or VAS 5051/5052.
  1. Ensure exhaust system has no leaks. Connect scan tool, see DATA LINK CONNECTOR  . Start engine and allow it to idle at closed throttle position. Observe scan tool Oxygen sensor (O2S) and RPM readings.
  2. Spray air intake system with Leak Detector Spray (G-001-800-A1). Air intake leaks will draw in leak detector spray. The spray reduces air/fuel mixture ignition and engine RPM, and decreases CO reading. Repair leaks as necessary.
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