Repair 7

What is EGR Tube Cleaning

The exhaust gas recirculation (EGR) system is used in car engines to reduce exhaust emissions. Though EGR problems are often blamed on the EGR valve, its the tube that can become clogged and will require cleaning.

How It Works

The EGR system works by allowing a small amount of exhaust to return to the combustion chamber. The gases cause a reduction in ignition temperature, which prevents the formation of NOx and other pollutants. The EGR system uses a valve that opens and closes to maintain the proper temperature.

Components

The primary component of the EGR system is the valve. Valves can be controlled either by vacuum pressure or electronics. When the gas is needed to cool combustion, the valve is opened. The exhaust gases move through the open valve and pass through a small tube or channel back to the intake manifold.

Tube Cleaning

The exhaust gases often carry small particles. These particles can become deposited inside the EGR valve or tube and clog the system causing it to fail. EGR tube cleaning simply ers to the process of cleaning this sediment from the tube. Most sediment will accumulate in the tube near the valve and can be removed with a small wire. Larger deposits will require the manifold to be removed for cleaning.