Checking non-return valve of fuel pump, vehicles with engine codes AXA, BDL, BKK — AUDI

🧭 Before you start

Fits: VW Transporter T5 (7H), VW Transporter T5 (7J), VW Transporter T6 (7E), VW Transporter T6 (7F)

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• Observe pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
• Ensure that fuel supply line connection engages audibly when joined.

🔧 Engine codes this applies to

📋 Procedure

1. Hold hoseV.A.G 1318/16(1) in a measuring container (2) with a volume of at least 1000 cm3.
2. Open shut-off tap of pressure tester and operate remote control briefly to bleed air.
3. Close pressure gauge shut-off tap (lever at right angles to direction of flow) (arrow).
4. Operate remote control at short intervals until a pressure of approx. 4 bar has built up.
5. ⚠ The fuel line is under pressure.Risk of injury to eyes and skin from fuel.Wear eye protection and protective clothing to avoid eye injuries and skin contact. Before loosening hose connections, wrap a cloth around the connection. Then release pressure by carefully opening the connection point. — If pressure is to high, reduce to 4 bar by carefully opening shut-off tap.

6. Observe pressure drop on pressure gauge. After 10 minutes, pressure must not drop below 3.0 bar.
7. Check fuel lines and unions leading to fuel tank for leaks.
8. Relieve fuel pressure.
9. Open tap of pressure testerV.A.G 1318 and allow fuel to flow into measuring container via hoseV.A.G 1318/16.
10. In addition wrap cloths around the joint to catch fuel which flows out.
11. Remove pressure testerV.A.G 1318 with adapters. [Note: Ensure that fuel supply line connection engages audibly when joined.]

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