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Checking exhaust gas recirculation > < Engine codes AGR, AHF, ALH, ASV

Golf Mk4

Engine codes AGP, AQM
Engine codes AGP, AQM
Test procedure
–  Remove engine cover.
–  Pull vacuum hose off exhaust gas recirculation valve.
–  Connect hand vacuum pump with accessories -V.A.G 1390- to valve.
   
–  Operate pump. Diaphragm should move in direction of vacuum connection (can be determined by touch from beneath -arrow-).
–  Pull hand vacuum pump hose off exhaust gas recirculation valve. The closing of the valve should be clearly audible. (Diaphragm moves in direction of exhaust manifold.)
  N26-0233

Checking exhaust gas recirculation > < Engine codes AGR, AHF, ALH, ASV