1. Check existence on pipes and connections existence of corrosion, mechanical damages, existence of leak of exhaust gases. Be convinced of durability of fastening of details of system. |
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2. Check a condition of connection of exhaust pipes (it is specified by an arrow). |
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3. Check a condition of rubber suspension brackets of pipes (it is specified by an arrow). |
4. At the same time examine a condition of the bottom of the car, check existence of corrosion, through openings, the dispersed seams through which exhaust gases can get to interior of the car. Close up all through openings in the body bottom silicone hard putty. |
5. Knocks and other noise can be often caused by details of the exhaust system, especially in places of their fastening. Shake pipes, mufflers, the catalytic converter. If these details come to contact with suspension bracket details, then replace elements of fastening of the exhaust system. |