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Checking fuel pressure (low pressure) > < Installing high-pressure pipes

A3 Mk2

Checking fuel pressure regulating valveN276
Checking fuel pressure regulating valve -N276-
Special tools and workshop equipment required
t  Fuel-resistant measuring container
  WARNING
t  Always read rules for cleanliness and instructions for working on fuel system → Chapter.
t  Follow these instructions and rules for cleanliness before starting work and while working on the fuel system.
–  Remove engine cover panel → Chapter.
   
–  Release hose clip -arrow- and detach fuel return hose from fuel rail.
–  Seal off open return line connection with a plug.
  N15-10402
–  Connect test hose -2- to return line connection of fuel rail -3-.
–  Hold end of test hose into measuring container -4- to measure return flow rate.
–  Start engine and let it idle for 30 seconds.
l  Specification: 90 … 110 ml in 30 seconds
If specification is not obtained, fuel pressure regulating valve -N276- is defective.
  A23-10457

Checking fuel pressure (low pressure) > < Installing high-pressure pipes