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Volkswagen Workshop Service and Repair Manuals

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Removing and installing fuel pressure senderG 247 > < Removing and installing fuel pressure regulating valveN 276

Golf Mk6

Checking fuel pressure regulating valve N 276
Checking fuel pressure regulating valve - N 276-
→ Chapter „Safety precautions“
→ Chapter „Rules for cleanliness“
l  Engine at operating temperature.
l  Air conditioner switched off
  Note
t  A fuel pressure regulating valve - N 276- leaking during starting will result in an increased return flow rate.
t  The fuel high-pressure required for starting will not be achieved.
»Carry out the following work sequence«
–  Remove engine cover panel → Chapter.
   
–  Pull off fuel return line -2-.
  A23-10427
–  Seal open fuel return line connection with a blanking plug -1-.
–  Connect fuel return line -2- to suitable hose -3-.
  A23-10438
–  Hold the end of this hose -1- in a suitable container -2- to measure the return flow rate.
1) Check with engine running
–  Start engine and run at idling speed.
l  Specified amount in 30 seconds: ≥75 ml
If the specification is not attained, the fuel pressure regulating valve -N 276- is defective.
2) Check with engine running
If condition in 1) is met, increase engine speed ≥ 2000 revs/min.
l  Return flow rate specification: 0 ml
l  Droplets are allowed
l  If the specification is not attained, the fuel pressure regulating valve -N 276- is defective.
3) If it is no longer possible to start engine
Carry out check with starting speed.
l  Return flow rate specification: 0 ml
l  Droplets are allowed
l  If the specification is not attained, the fuel pressure regulating valve -N 276- is defective.
  A23-10320

Removing and installing fuel pressure senderG 247 > < Removing and installing fuel pressure regulating valveN 276