volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

ABOUT US
Senders and sensors > < Performing first fuel filling after installing high-pressure pump

Golf Mk6

Checking return flow rate at high-pressure pump
Checking return flow rate at high-pressure pump
Special tools and workshop equipment required
t  Adapter -VAS 6551/5-2-
l  Tests on fuel low-pressure side have been performed and were not cause for complaint.
l  Fuel tank is filled with clean fuel according to DIN EN 590.
l  Starter turning at starting speed ≥ 230revs/min. → Electrical system; Rep. gr.27 Anlasser, Stromversorgung
l  Observe instructions for working on fuel system → Chapter
Checking fuel low-pressure: vehicles with 0.5 bar fuel low-pressure system. → Rep. gr.20
Checking fuel low-pressure: vehicles with 6.0 bar fuel low-pressure system. (Passat 2011►) → Rep. gr.20
»Carry out the following work sequence«
   
–  Pull fuel return line off high-pressure pump -arrow-.
–  Connect adapter -VAS 6551/5-2- to high-pressure pump return.
  N23-10481
–  Hold adapter -VAS 6551/5-2--1- in a suitable container -2- to check return flow rate.
Measure with starting speed ≥ 230revs/min.
  N23-10481
–  Remove connector from fuel metering valve -N290--11-.
Return flow rate (fuel flow rate when starter speed ≥ 230revs/min) present, continue with checks on high-pressure accumulator → Chapter.
No return flow rate, renew high-pressure pump → Chapter.
  A23-10420

Senders and sensors > < Performing first fuel filling after installing high-pressure pump