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Home >> Volkswagen >> 1990 >> Vanagon Syncro AWD F4-2109cc 2.1L (MV) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Fuel Injector Testing >> Fuel Injectors, Checking
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Fuel Injectors, Checking

Checking Fuel Injectors

Injector spray pattern, checking

- Remove injectors in pairs, (connectors and fuel lines remain connected)
- Disconnect connectors from second pair of injectors





- Operate starter briefly, observe spray pattern:
spray pattern must be cone shaped
- Re-install injectors

Note: When installing, make sure seals (1) are present.

Checking For Leaks

- Disconnect all connectors from injectors
- Remove injectors in pairs (fuel lines remain connected)
- Switch ignition on for about 5 seconds
No more than 2 drops per minute per injector may leak out
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