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Checking fuel pressure (low pressure) > < Removing and installing fuel rail

A4 Mk3

Installing high-pressure pipes
Installing high-pressure pipes
Special tools and workshop equipment required
   
t  Open end spanner insert, AF 17 -V.A.G 1331/6-
Procedure
  Note
t  Note identification marks for cylinder allocation when re-installing high-pressure pipes.
t  The high-pressure pipes can be re-used after performing the following checks:
t  Check taper seats of high-pressure pipes for deformation and cracks.
t  The bore of the pipe must not be distorted, restricted or otherwise damaged.
t  Corroded pipes must not be used again.
–  Use vacuum cleaner to remove dirt from taper seat at fuel rail.
–  Clean fuel pipe and end of pipe using cleaning solution and dry with compressed air.
–  Lubricate threads of union nuts with fuel.
–  Hand-tighten union nuts on high-pressure pipes (ensure that pipes are not under tension).
l  Tightening torque → Chapter „Injectors - exploded view“
  W00-1126
–  To tighten unions of high-pressure pipes to fuel rail and injectors, use torque wrench -V.A.G 1331- with open end spanner insert, AF 17 -V.A.G 1331/6-.
–  Check fuel system for leaks → Chapter.
  A23-10096

Checking fuel pressure (low pressure) > < Removing and installing fuel rail