Leak test the exhaust system

On cars with a controlled catalytic converter exhaust system leaks connections to the oxygen concentration sensor (lambda probe) can cause the following problems:

- Difficulty in starting the engine;

- The engine stalls;

- Irregular operation of the engine at idle;

- Jerks when accelerating.

Test condition

The engine has a temperature or cold hands.

To test requires a source of compressed air.

Start the engine and listen to the engine running, the exhaust system, the presence of leaky places.

Stop the engine.

Put the gun compressed air source (compressor) into the exhaust pipe and seal with a rag.

Set the air pressure of 6 bar. Turn the gun.

Cover the junction of the cylinder head and exhaust manifold, the exhaust manifold and the exhaust front pipe, front exhaust pipe and catalytic converter tool to search for leaks and check for bubbles.

Repair leaking exhaust system.