Note: One cause of low fuel rail pressure could be a dirty fuel module strainer.
Tip: If you suspect a malfunction of the pressure regulator, it must be replaced.
Removing
1. Remove the fuel module (see "Engine fuel module 11183 (1,6i) - removal and installation").
2. Remove the fuel gauge sensor (see "Engine fuel module 11183 (1,6i) - replacement of the fuel gauge sensor").
3. Using pliers with thin jaws, remove the retaining ring from the guide cover of the fuel module.
Warning! With a marker, mark the guide on which the spring is put on. It is impossible to rearrange the spring to another guide.
4. Having removed the guide covers from the fuel module housing, remove the spring.
5. Disconnect the three latches.
6. We take out the fuel pump assembly with the strainer from the housing.
7. We remove dirt deposits from the fuel module housing and wash the housing in clean gasoline.
8. We wash the mesh filter in acetone and blow it with compressed air (from compressor or foot pump).
Recommendation: If the strainer is very dirty and cannot be cleaned, replace it or the fuel module assembly.
Installation
We assemble the fuel module in the reverse order of disassembly.