Volkswagen Workshop Service and Repair Manuals > Golf Mk6 > Power unit | 4-cylinder injection engine (1.4 l engine) | Mixture preparation system, electronic inj.,Gas | Checking components | Checking injectors for leaks and quantity injected (vehicles ? model year 2006)

Checking quantity injected > < Checking injectors for leaks and quantity injected (vehicles ? model year 2006)

Checking for leaks

WARNING

Fuel system is under pressure! Wear eye protection and protective clothing to avoid possible injury and skin contact. Before loosening hose connections, wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.

Test prerequisite

l	The fuel pressure must be OK. Checking → Chapter.

–	Pull connectors -arrows- off all injectors.

–	Unclip wiring harness for injectors.

–	Detach fuel rail from intake manifold.

–	Pull fuel rail with injectors out of intake manifold (fuel lines remain connected).

–	Pull fuse SB33 out of socket F33 of fuse holder.

–	Connect right terminal of fuse socket F33 and battery positive with auxiliary cables from auxiliary measuring set -V.A.G 1594 C- so that fuel pump runs.

Note

This step serves only to have the fuel pump running when the engine is stopped.

–	Check injectors for leaks (visual check). No more than 1 to 2 drops per minute must escape from each valve when fuel pump is running.

If the fuel loss is greater:

–	Separate connection between fuse socket F33 and battery positive and renew leaking injector → Chapter.

Note

Always renew seals.

Power unit
4-cylinder injection engine (1.4 l engine)
Mixture preparation system, electronic inj.,Gas
Checking components / ecking_injectors_for_leaks_and_quantity_injected_(vehicles_?_model_year_2006)/">Checking injectors for leaks and quantity injected (vehicles ? model year 2006)
Checking for leaks

Checking quantity injected > < Checking injectors for leaks and quantity injected (vehicles ? model year 2006)