| Repairing injection system |
| Assembly overview - intake manifold upper part → Chapter. |
| Assembly overview - intake manifold lower part → Chapter. |
| Assembly overview - fuel rail with injectors (petrol operation) → Chapter |
| Assembly overview - gas rail with gas injection valves → Chapter |
| Assembly overview - gas pressure regulator → Chapter |
| Removing and installing gas pressure regulator → Chapter |
| General notes on injection |
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| Fuel hoses in engine compartment must be secured only with spring-type clips. The use of clamp or screw-type clips is not permissible. |
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| The battery must be disconnected only with ignition switched off. If a coded radio is installed, ascertain code before disconnecting battery. |
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| For trouble-free operation of electrical components, a voltage of at least 11.5 V is necessary. |
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| Do not use sealants containing silicone. Particles of silicone drawn into the engine will not be burnt in the engine and damage the lambda probe. |
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| If, after fault finding, repairs or component tests, the engine starts, runs for a short period and then stops, then the fault may be that the immobiliser is blocking the engine control unit. In this case, the control unit must be adapted. |
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| During some checks, it is possible that the control unit will detect and store a fault. Therefore, after completing all checks and repairs, read the fault memory and clear if necessary → Chapter. |
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| Vehicles with an airbag are fitted with a crash fuel shut-off. It reduces the danger of a fire in a crash as the fuel pump is switched off via the fuel pump relay. |
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| When driver door is opened, the fuel pump is activated for 2 seconds to develop pressure in the fuel system. This improves starting. |
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