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Checking delivery rate > < Checking fuel pressure, engine codes BLR, BLX, BLY, BVX, BVY, BVZ

Golf Mk5

Checking holding pressure, engine codes BLR, BLX, BLY, BVX, BVY, BVZ
Checking holding pressure, engine codes BLR, BLX, BLY, BVX, BVY, BVZ
   
l  Fuel pressure OK and pressure tester -V.A.G 1318- connected. Checking fuel pressure → Chapter.
–  Switch on ignition repeatedly until fuel pressure does not rise any more on pressure gauge.
–  Read fuel pressure on pressure gauge. Specification: 3.5…5.0 bar.
–  Observe pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
If the pressure drops further:
–  Switch on ignition repeatedly until fuel pressure does not rise any more on pressure gauge.
  N20-10415
–  After pressure has built up, close shut-off valve of pressure tester immediately. Lever is at right angle to direction of flow -arrow-.
If the pressure drops again:
–  Check fuel pipe to high-pressure pump for leaks.
If no fault is found:
–  Renew high-pressure pump → Chapter.
If the pressure does not drop now:
–  Check supply line to fuel filter for leaks.
If no fault is found on the fuel line:
  N24-0618
–  Check non-return valve in fuel delivery unit. To do this, connect pressure tester -V.A.G 1318- and adapter set -V.A.G 1318/17A- between fuel filter and fuel supply line.
–  Open the pressure tester shut-off tap. The lever points in direction of flow.
–  Switch on ignition repeatedly until fuel pressure does not rise any more on pressure gauge.
–  Read fuel pressure on pressure gauge. Specification: 3.5…5.0 bar.
  N20-10479
–  After pressure has built up, close shut-off valve of pressure tester immediately. Lever is at right angle to direction of flow -arrow-.
–  Observe pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
If pressure drops:
–  Fuel pump non-return valve is defective, renew fuel delivery unit → Chapter.
If the pressure does not drop:
–  Pressure limit valve in fuel filter is defective. Renew fuel filter.
  N24-0618

Checking delivery rate > < Checking fuel pressure, engine codes BLR, BLX, BLY, BVX, BVY, BVZ