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Testing fuel injection rate > < Checking the tightness of the injection valves and the fuel injection rate

Fabia Mk2

Checking the tightness of the injection valves
Checking the tightness of the injection valves
  WARNING
The fuel system is under pressure! Before opening the system lay cleaning cloths around the connection point. Reduce pressure by carefully releasing the connection point.
Test condition
l  The fuel pressure must be OK, test → Chapter
–  Remove the air filter housing → Chapter
   
–  Disconnect plug -arrows- of all injection valves.
–  Release the wiring loom of the injection valves.
–  Unscrew the fuel distributor from the intake manifold.
–  Remove the fuel distributor with injectors from the inlet manifold. (Hose remains connected).
  S15-0348
–  Remove fuse for protection of fuel pump from the fuse carrier below the dash panel according to current flow diagrams → Current flow diagrams, Electrical fault finding and Fitting locations.
–  Connect the remote control -V.A.G 1348/3A- with the adapter cable combination from the adapter cable set between the relevant fuse sockets (de-energized) and to battery positive (+).
  Note
This step is only intended to ensure that the fuel delivery unit runs when the engine is switched off.
–  Activate remote control. The fuel pump must run.
–  Test the tightness of the injection valves (visual inspection).
l  With the fuel delivery unit running, maximum 2 drops may drip out per minute at each valve.
If the fuel loss is greater than this:
–  Replace the leaky injector → Chapter.
  Note
Always fit new seals.
  S20-0290

Testing fuel injection rate > < Checking the tightness of the injection valves and the fuel injection rate