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

Test prerequisites

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

l	Injectors installed in fuel rail and fuel line connected.

–	Insert injector to be checked into measuring glass from injection rate tester -V.A.G 1602-.

–	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.

–	Connect a contact of injector to be tested to engine earth using auxiliary cables from auxiliary measuring set -V.A.G 1594 C-.

–	Connect second injector contact with auxiliary cable to remote control for V.A.G 1348 -V.A.G 1348/3A- using adapter cable -V.A.G 1348/3 - 2-.

–	Connect crocodile clip to battery (+).

–	Operate remote control -V.A.G 1348/3 A- for 30 seconds.

–	Repeat check on other injectors. Use new measuring beakers.

–	After all injectors have been activated, place measuring beakers on a level surface and compare the quantity injected. Specification: 60…80 ml per injector.

When checking the quantity injected, check the spray pattern as well. The spray patterns must be the same for all injectors.

If the measured values of one or more injectors are above or below the prescribed specifications:

–	Renew defective injector → Chapter.