Checking holding pressure, engine codes BLR, BLX, BLY, BVX, BVY, BVZ — VW
Checking holding pressure, engine codes BLR, BLX, BLY, BVX, BVY, BVZ on VW: 16 steps, engines BLR, BLX, BLY, BVX.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Golf V / Jetta (1K, 2003–2009); platform code 5M1
- Renewed: high-pressure pump, fuel delivery unit, fuel filter
Don't miss
- Watch pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
📐 43 workshop diagrams for BLR
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Switch on ignition repeatedly until fuel pressure does not rise any more on pressure gauge.
- Read fuel pressure on pressure gauge. Specification: 3.5…5.0 bar.
- Watch pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
- Switch on ignition repeatedly until fuel pressure does not rise any more on pressure gauge.
- After pressure has built up, close shut-off valve of pressure tester immediately. Lever is at right angle to direction of flow (arrow).
- Check fuel pipe to high-pressure pump for leaks.
- Renew high-pressure pump .
- Check fuel supply line to fuel filter for leaks.
- Check non-return valve in fuel delivery unit. Connect pressure testerV.A.G 1318 and adapter setV.A.G 1318/17A between fuel filter and fuel supply pipe.
- Open the pressure tester shut-off tap. The handle points in direction of flow.
- Switch on ignition repeatedly until fuel pressure does not rise any more on pressure gauge.
- Read fuel pressure on pressure gauge. Specification: 3.5…5.0 bar.
- After pressure has built up, close shut-off valve of pressure tester immediately. Lever is at right angle to direction of flow (arrow).
- Watch pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
- Fuel pump non-return valve is defective, renew fuel delivery unit .
- Pressure limit valve in fuel filter is defective. Renew fuel filter.
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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.