Check for leaks under the hood (12 months) (Audi A4 B5)

1. To gain access to the engine, remove the top engine cover. Raise the front of the vehicle and install safety stands. Visually inspect the engine mating surfaces, gaskets and seals for signs of oil and coolant leaks. Pay particular attention to the camshaft cover, cylinder head, oil filter and oil pan. Note that over time, the engine will begin to "sweat" oil, which in itself is not a malfunction unless a serious leak is found. If a leak is detected, the leaking seal or gasket must be replaced as described in the relevant chapter of the Manual.

2. Check the condition of all pipes and hoses related to the engine. Make sure that the clamps are present and securely tightened. Damaged or loose clamps can cause leaks, which in turn will cause more serious malfunctions.

3. Carefully inspect the radiator hoses along their entire length. Replace any hoses that are defective. Hose cracks are more visible if the hose is compressed. Pay special attention to the clamps that attach the hoses to the system pipes. Hoses sometimes rub against the edges of the clamps, which leads to leaks. Worm clamps are more reliable than others.

4. Check for leaks in the heating system. If faults are found in the system components, repair them as described in Chapter 3.

5. If an automatic transmission is installed, check the hoses of its cooling system for leaks and damage.

6. With the vehicle raised, make sure there are no leaks, cracks or other damage to the fuel tank. The connection between the filler neck and the tank is especially critical. Often, connections leak due to loss or loosening of clamps and damage to the hoses.



7. Carefully inspect the condition of the hoses and pipes of the fuel lines from the tank to the engine along their entire length. Pay special attention to the ventilation hoses and pipes, which sometimes wrap around the filler neck, become clogged and kinked. Replace the unusable sections. While you are at it, also check the condition of the brake pipes and hoses.

8. After opening the hood, check the reliability of the connections of the fuel, vacuum and brake hoses and tubes and that they are not damaged.

9. Check the condition of the power steering tubes and hoses.

10. Once the check is complete, install the lower powertrain guard and upper engine cover. Lower the vehicle.

[The original article is located on the online resource audimanual.ru]