Exhaust gas system (Opel Frontera B)

The exhaust system consists of an exhaust pipe with a catalytic converter and mufflers. The exhaust system ensures the removal of exhaust gases into the atmosphere, reducing the concentration of pollutants, reducing engine noise to the required level with minimal loss of engine power. In order for the exhaust system to perform its functions, it must be in good working order. The condition of the exhaust system also affects engine power and fuel consumption.



Mufflers are designed to smooth out pulsations in the exhaust gas flow and reduce noise levels.

When repairing, the exhaust system parts can be replaced individually. Self-locking nuts and seals must be replaced with new ones after each dismantling.

The pipe hanger retaining rings and rubber cushions should be checked for damage and cracks and, if necessary, also replaced with new ones.

When installing new exhaust pipes, it is recommended to replace all fasteners with new ones. The catalytic converter is designed to reduce the level of harmful substances in exhaust gases. It consists of a ceramic porous frame covered with a protective layer containing salts of noble metals that ensure the process of cleaning exhaust gases.



The purpose of the exhaust gas recirculation valve is to divert part of the exhaust gases back into the combustion chamber in order to reduce the ignition temperature of the fuel-air mixture and thereby reduce the content of harmful substances in the exhaust gases.

Exhaust leaks in the exhaust system are usually caused by damaged gaskets and leaking pipe connections or damage to the mufflers caused by impacts while driving. Exhaust gas leaks lead to increased noise and vibration from the contact of exhaust system components with the vehicle body.

Before removing or disassembling exhaust system components, soak the bolts and nuts securing the exhaust system components with a fluid that loosens the connections. Wait 5 minutes for the liquid to penetrate the threaded connection.

After working on the exhaust system, move the vehicle's exhaust system to the sides to make sure it does not touch the vehicle body. Otherwise, replace the rubber exhaust mounts.

Warning: Make sure the exhaust system is sufficiently cool before removing or inspecting components.