Checking the technical condition of suspension elements and exhaust system (Fiesta 4)

The exhaust pipe is bolted to the exhaust manifold, and the entire exhaust system is attached to the bottom of the car using elastic rubber supports to reduce vibration from the passage of exhaust gases. In the normal state, the system is installed freely, without tension and with sufficient clearance from the body elements.



SEQUENCE OF WORKS



Fig. 11.1. Location of rubber supports for fastening the exhaust system to the bottom of the vehicle

1. Check the rubber mounts for fragility, cracks or other defects and replace them if necessary (Fig. 11.1).

2. To check, move the exhaust pipe left and right near the rubber supports.

3. Check the tightness of the exhaust system bolts, exhaust manifold and brackets, but do not apply excessive force that may damage the parts.



4. With the engine running, plug the end of the exhaust pipe with a rag. The engine should stop after a short period of time. If you hear a hissing sound and the engine continues to run without any problems, this means that the exhaust system is leaking.

5. A duller than normal exhaust note and a popping noise when moving the exhaust pipe indicate corrosion of the exhaust system.

6. Use a hammer to thoroughly tap the removed, serviceable muffler. Do not hit at an angle to the muffler surface. If a ringing sound is heard with each hit, this means that the metal has not yet been damaged by corrosion. If the sound from the hits becomes duller in some places, then the outer shell has already been weakened by corrosion and will soon burn out, especially in the winter when salt is scattered on the road surface.