Checking injection rate: VW Golf IV / Bora (AGN, AGU, AQA, ARZ, …)
Step-by-step checking injection rate for the VW Golf IV / Bora: 13 steps. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Golf IV / Bora (1J)
- Renewed: measuring beakers, defective injector
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- Initiate final control diagnosis with vehicle diagnosis, testing and information systemVAS 5051B; fuel pump must run.
- Switch on ignition; the fuel pump must run.
📐 46 workshop diagrams for AGN
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Insert injector to be checked into measuring beaker from injection rate testerV.A.G 1602.
- Connect a contact of injector to be tested to engine earth using test lead from auxiliary measuring setV.A.G 1594C.
- Connect second injector contact with auxiliary cable to remote control for V.A.G 1348V.A.G 1348/3A using adapter leadV.A.G 1348/3-2.
- Connect crocodile clip to battery (+).
- Initiate final control diagnosis with vehicle diagnosis, testing and information systemVAS 5051B; fuel pump must run.
- Press key on display for "“Vehicle self-diagnosis”".
- Press key "“01 - Engine electronics”" on display.
- Press key "“03 - Final control diagnosis”" on display. [Note: This step serves only to have the fuel pump running when the engine is not running.The final control diagnosis activates the injectors. The connector for the injectors must be disconnected before activating the final control diagnosis.]
- Switch on ignition; the fuel pump must run.
- Operate remote control for V.A.G 1348V.A.G 1348/3A for 30 seconds.
- Repeat check on other injectors. Use new measuring beakers.
- After all injectors have been activated, place measuring beakers on a horizontal surface and compare the injection rate.
- Renew defective injector.
Ask TorqFix about your VW AGN — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your VW AGN — free → or sign up free to see the drawingsOther VW procedures
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.