Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Check the operation of the pneumatic EGR valve

Model: Ford Mondeo / Fusion MK 1 - Years 1993-2000
Part: EGR valve

The EGR valve serves to reintroduce a portion of the exhaust gases back into the intake to achieve further combustion and reduce pollutants. Depending on the engine speed, this valve opens and closes as needed and can be controlled either by an electric actuator or a pneumatic one, as is the case with the vehicle in question. To test the efficiency of this valve without removing it, remove the air duct, intercept the valve, disconnect the vacuum hose, and connect a manual vacuum pump. Activate the pump to create a vacuum and open the valve: if the actuator membrane is good, the vacuum will be maintained, keeping the needle steady. Similarly, you can start the engine, allow the valve to open to make the engine run unevenly, then close it to return the engine to normal operation.

Updated on 15 February 2026 by ScegliAuto

Video tutorial

Related tutorials

EGR Valve Cleaning Instructions
Ford Mondeo / Fusion (1993-2000 / MK 1) For the vehicle in question, removing the EGR valve is quite straightforward: the valve is located at the rear of the engine, just below the air filt…
How to Change the EGR Valve in a Ford Mondeo
How to Change the EGR Valve in a Ford Mondeo
Ford Mondeo / Fusion (2022-2026 / MK 5) To replace the EGR valve in a Ford Mondeo, turn off the engine and wait for it to cool completely. Disconnect the negative battery terminal, remove t…
How to Remove the EGR Valve from a Ford Mondeo
How to Remove the EGR Valve from a Ford Mondeo
Ford Mondeo / Fusion (2000-2007 / MK 2) Let’s see how to remove the EGR valve from a Ford Mondeo. Lift the bonnet and secure it, then, using a socket spanner, unscrew the locking pins of th…

Other guides you may be interested in

How to Check the Oil Level on a Jeep Renegade?

To check the oil level on a Jeep Renegade, you need to open the bonnet to access the components inside the engine bay: on the lower left side of the engine block, you will find the dipstick for checking the level. This should be pulled out and thoroughly cleaned with a cloth: once cleaned, reinsert it back into its tube and pull it out immediately after. This way, you can check that the oil mark is between the minimum and maximum levels; finally, you can place the dipstick back in its tube.

Watch the video!


by ScegliAuto

More videos