Where is an egr valve

Because the valve itself can also be expensive, it may be worth it to try cleaning instead of changing the EGR valve. With the valve removed, spray some carb or intake cleaner into both the intake and exhaust ports of the valve, and use a brush to get everything as clean as possible.

Allow it to dry thoroughly and then reinstall. If this doesn't resolve your problems you may need to purchase a new valve. When replacing an EGR valve, be sure to remember to reinstall any gaskets, and replace them if they are missing or damaged.

Start the bolts that go into the intake side, but leave them loose. Thread the pipe onto the other end of the EGR valve, and then tighten everything up, making sure that the valve is going on straight and isn't being twisted or forced into position. This is because at low rpm the fuel ignites early when it meets the high temperature.

Detonations are also common as a second ignition can occur after the normal ignition. Some of the same engine performance problems which are indicative of an EGR valve failure can also indicate problems in other parts of the system. This can include the likes of faulty spark plugs, spark plug wires, fuel filters, fuel pump regulator or engine sensors. Increased hydrocarbon emissions can be a result of a leaking fuel injector, bad injection timing, bad cylinder compression or a bad oxygen sensor.

An increase in NOx could be caused by a vacuum leak, a clogged fuel injector, low fuel pressure or a leaking head gasket.

Rough idle can also be a result of a faulty ignition coil, a vacuum leak or a problem with the ignition system. If your car is displaying any of the EGR valve symptoms mentioned and you suspect that you have a faulty EGR valve then it is advisable to get your vehicle checked out by a qualified mechanic.

EGR faults can be easily diagnosed using the correct diagnostic equipment. At Stoneacre we have all the latest diagnostic tools and equipment, as well as a team of highly trained technicians, making us well-placed to diagnose and treat any EGR valve problems.

Some manufacturers may recommend changing an EGR valve at pre-determined intervals. This information, if provided by the manufacturers will be included in your cars manual, and should be adhered to in order to keep your car running at its best! Advice Centre. Lisa Simm. Share On Share. Book your Service Quickly arrange for your existing car to be seen by our manufacturer-trained technicians.

Upcoming Cars. Best of Stoneacre. Other articles from the Stoneacre Blog. Demi 07 Feb Sam Bisby 04 Jan Advice Centre What is a semi-automatic car? Demi 19 Feb This process enables a certain amount of burned exhaust gas to enter the intake manifold before it re-introduces fresh air into the engine. While this step might seem counterintuitive, it makes it possible for modern engines to run efficiently and for longer.

The combustion mix maintains the lower combustion temperature that keeps the NOx emissions low, as well. The exhaust fumes are definitely beneficial but they can clog the valve once they accumulate over time. This can cause clogs on the valve and a host of other engine problems. Experts agree that the valve must be cleaned every few years.

You can use the 50,mile gauge as a point of reference for when you need to do the cleaning. Now that you understand the function of the EGR valve and why it might need cleaning, the next step is to determine when cleaning should be done or necessary. This is an important step to know because a lot of people end up throwing away their valve when in fact a little cleaning could still restore its function.

The EGR Valve is emission-related so the symptoms are not too obvious. But if you know what to look for, then you can tell that it is time to clean your valve. These are some of the symptoms to look out for:. Follow this step-by-step guide on how to clean an EGR valve to optimize the performance of your vehicle. When you are done cleaning, replace the EGR valve to its original location.

Check to see if the device works. You will know that the cleaning was a success if the Check Engine display is no longer on. Sign in. Log into your account. Privacy Policy. Password recovery.