Testing jammed-open injectors — VW

🧭 Before you start

Fits: VW Golf VII Variant (BA), VW Golf Sportsvan (AM1, 2014–2020), VW Golf VII (5G, 2012–2020), VW Touran II (5T, 2015–)

• Renewed: defective injectors

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• Make sure all parts are clean; no dirt must be allowed to enter the fuel system.Check one cylinder after the other.
• Ensure cleanliness. No dirt must be allowed to get into the disconnected fuel return lines or the open connections on the injectors.

🔧 Engine codes this applies to

📋 Procedure

1. Erase entry in event memory using vehicle diagnostic tester.
2. Remove engine cover panel .
3. ⚠ Avoid impairing function through contamination or soiling.Rules for cleanliness — Clean all connections (e.g. with commercially available cold cleaning solvent) before removing. [Note: Make sure all parts are clean; no dirt must be allowed to enter the fuel system.Check one cylinder after the other.]
4. Dry all cleaned parts.
5. Remove noise insulation. [Note: Ensure cleanliness. No dirt must be allowed to get into the disconnected fuel return lines or the open connections on the injectors.]

6. Fit front end hook3370 into lowest recess (arrow).
7. Release centre piece of return line connections in (direction of arrow).
8. Pull release tabs upwards (arrows) and pull return line connections off injectors.
9. Connect clean, blown-out adapter to return line connection of injector to be tested.
10. Use hand-operated vacuum pumpVAS 6213 to generate vacuum of approx. -500 mbar.
11. Renew defective injectors .
12. Fit engine cover panel .

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