Repair 7

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.

Mobil produces a series of fuel injector cleaner products that should be used in your vehicle to rid it of gas buildups. As you fill up, gasoline leaves deposits that have the potential to clog your fuel injectors, which slows the flow of gas throughout your vehicle. Using a fuel injector kit can remedy this. These small bottle kits come packed with detergents that break down the deposits that the gasoline creates, while freeing up the flow of gasoline.

Instructions

1

Crack open the fuel injector cleaner bottle. Throw away the cap and pull out the pouring tube until its at full length.

2

Remove the gasoline cap guarding the gas tank by twisting it hard to the left and pulling it all the way once its loose.

3

Push the pouring tube into the gas tank as if you were pumping gas.

4

Allow the entire bottle kit to pour into your gas tank and circulate.

5

Discard the bottle and close your gasoline tank.