Compression (2.8L VR6, Engine Code AXK)

WARNING: This page is about a different car, the 2003 Volkswagen EuroVan, 2002 Volkswagen EuroVan, 2001 Volkswagen EuroVan, 2000 Volkswagen EuroVan, and 1999 Volkswagen EuroVan. However, it is still accessible from the selected car via links, so may be relevant.

Ensure battery is fully charged. Engine oil temperature should be a minimum of 86°F (30°C).
Turn ignition off. Remove engine cover. See Fig 1 . Remove intake hose between Mass Air Flow (MAF) sensor (G70) and throttle valve control module (J338).

Fig 1: Removing Engine Cover (Engine Code AXK)
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Remove radiator grille. Remove right and left securing bolts for lock carrier. See Figure . Tilt lock carrier with radiator toward the front.
Unclip cover for ignition coils/power output stage. Disconnect harness connectors from ignition coils/power output stage See Fig 2 .

Fig 2: Locating Ignition Coil/Power Output Stage Harness Connectors (Engine Code AXK)
Courtesy of VOLKSWAGEN UNITED STATES, INC.
When performing compression check, throttle valve should be open. Check engine mechanical condition with a compression gauge and remote starter to crank engine. See COMPRESSION SPECIFICATIONS table.

COMPRESSION SPECIFICATIONS

Application

⁽¹⁾ Specification

Normal Compression Pressure

2.8L VR6 ⁽²⁾

145-189 psi (10.0-13.0 bar)

Minimum Compression Pressure

2.8L VR6

109 psi (7.5 bar)

Maximum Variation Between Cylinders

2.8L VR6

44 psi (3.0 bar)

⁽¹⁾	Operate starter until tester shows no further increase.

⁽²⁾	Unplug ignition coils before testing compression. See ⁽²⁾ and Fig 2 .