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Checking delivery rate of fuel system pressurisation pumpG6, engine codes CBAA, CBAB, CBBB, CBDA, CBDB, CBDC, CJAA, CFFA, CFFB, > < Checking fuel pump

Golf Mk6

Checking delivery pressure of fuel system pressurisation pumpG6, engine codes CBAA, CBAB, CBBB, CBDA, CBDB, CBDC, CJAA, CFFA, CFFB, CFGB, CFHB, CFHC, CLCA
Checking delivery pressure of fuel system pressurisation pump -G6-, engine codes CBAA, CBAB, CBBB, CBDA, CBDB, CBDC, CJAA, CFFA, CFFB, CFGB, CFHB, CFHC, CLCA
Special tools and workshop equipment required
t  Pressure gauge -VAS 6551-
t  Vehicle diagnosis tester
Test prerequisite:
l  Fuses must be OK.
l  Battery voltage at least 12 V
l  All electrical consumers, e.g. lights and rear window heating, must be switched off.
   
–  Separate quick-release coupling -A- (completely black or with black marking) of fuel supply line. Separate connectors → Chapter.
–  Connect pressure tester -VAS 6551- with cables -VAS 6551/1- and -VAS 6551/2- to open ends of fuel supply line.
–  Switch on pressure tester -VAS 6551- by pressing On/Off button.
–  Open shut-off taps „A“ and „B“ of pressure tester and close shut-off tap „C“.
–  Start engine and run at idling speed.
–  Close shut-off tap „B“ for a maximum of 15 seconds and read the available pressure on the pressure tester -VAS 6551- within this time. Specification min. 0.5 bar.
–  If the delivery pressure temporarily drops, renew fuel delivery unit.
If the specifications are attained:
–  Renew fuel filter, for engine running problems, to ensure the fuel filter is not blocked.
If the specifications are not obtained
–  Remove rear bench seat → General body repairs, interior; Rep. gr.72.
–  Fold carpet to the side or forwards.
–  Remove cover from fuel delivery unit.
  Note
Press in securing ring to release fuel line.
  N20-10436
–  Pull fuel supply line (black or black marking) -A- off fuel delivery unit.
–  Connect pressure tester -VAS 6551- to open ends of fuel supply pipe and fuel delivery unit using lines -VAS 6551/1- and -VAS 6551/2-.
–  Switch on pressure tester -VAS 6551- by pressing On/Off button.
–  Open shut-off taps „A“ and „B“ of pressure tester and close shut-off tap „C“.
–  Start engine and run at idling speed.
–  Close shut-off tap „B“ for a maximum of 15 seconds and read the available pressure on the pressure tester -VAS 6551- within this time. Specification min. 0.5 bar.
If the specifications are again not attained:
–  Check delivery rate of fuel pump → Chapter.
  Note
After completing assembly, check all quick-release fasteners are engaged correctly by pulling back on fastener.
  N20-10510

Checking delivery rate of fuel system pressurisation pumpG6, engine codes CBAA, CBAB, CBBB, CBDA, CBDB, CBDC, CJAA, CFFA, CFFB, > < Checking fuel pump