E39 series BMW 5

1. Check a condition of all system of release, beginning from the engine and finishing a cut of an exhaust pipe. In an ideal this check should be carried out at the car lifted on the winch when from below to it there is a free access. If the winch is inaccessible, поддомкратьте the car and reliably establish it on support.
2. Check pipes and trumpet connections on existence of signs of leaks, strong corrosion and damages. Check a condition and reliability of fastening of all brackets and подвесов systems.
3. At the same time examine the car bottom on existence of holes, the corrosion, the dispersed seams and the other defects allowing penetration of fulfilled gases in salon of the car. Close up all openings suitable hermetic.
4. Release system, especially its support and подвесы, often are a source of a roar and other unpleasant sounds.

5. Check rubber holders on existence of a time, having turned and having stretched them. If necessary replace them. Address to an accompanying illustration.

6. Shake and pull pipes, exhaust silencers and the catalytic converter (if it is provided). If these components adjoin to elements of a body or suspension bracket details, replace fixture of system of release.
7. Knock on the catalytic converter and check, whether it adjoins somewhere to adjacent designs. If such contact is, weaken all bolts of fastening. Elements of the catalytic converter will take the places. After that again fix the catalytic converter.