How Long Does It Take To Clean Egr Valve

Got an EGR (Engine Gas Recirculation) issue? Is the EGR clogged up? Want to avoid replacing the EGR valve?

Our diagnosis and 3-step engine carbon cleaning is your best option!

Why does it get clogged up? The EGR system recirculates expelled exhaust gases, because these gases contain oil residues, carbon from the burnt diesel and other such nasties the valve that controls the amount of gases recirculated, the related pipework, and if fitted a cooler (designed to cool the gases on recirculation) will over 1,000's of miles become clogged.

This leads to symptoms such as poor engine performance, lowered fuel efficiency, engine management warning lights and the limp-home-mode being activated (restricted performance), lowered fuel economy, rough idling and/or a strong fuel odor.We have a great wealth of knowledge and specialise in the diagnostics and cleaning of the EGR system. This includes live data analysis using dealer level diagnostics equipment that we include in all our EGR cleaning services.

How do we clean the EGR? Firstly we'll use our dealer level diagnostics equipment to assess the engine management error codes and complete live data analysis. Then assuming the vehicle is fit for cleaning we use a 3-stage carbon cleaning system that includes our world-leading Hydrogen carbon cleaning and our unique chemicals. This means in the majority of instances there is no requirement to remove the EGR for cleaning and assuming it's just clogged up / dirty this will resolve the issue. On completion of the job, which takes approximately 45-60 minutes, we'll reassess the engine management system and reset any fault codes.

El Ber

Had my carbon clean done today and got to say its a lot better than before 🙂 more responsive. It's my second car done by Red and I wouldn't expect any but only positives after treatment!! � I really really recommend it and I will definitely maintain my bmw e46 330d with the treatment. And Red you should come with me for a spin on motorway it was fun �

Lee Hodkinson

My car Had the treatment today. I was very sceptical it would work? . Thought I would bite the bullet and give it a go. Thanks to red he took me through the whole prossess and kept reassuring me it would work. Well I didn't have much hope tbh. Well it did work just been out in the car and it's more responsive and now goes in gear as it should. Thanks Red will be recommending you to everybody I know cheers pal good work recommended for sure guys. Regards one happy chappy lee
Iain Soeder

Cannot fault james and his effort!!! Always approachable and if your unsure of anything he's very responsive via calls or txt outstanding customer service and very happy with the result of my car. Would highly recommend to anyone.

Nigel Harris

Just had a stage 3 clean on my 58 plate 520d and wow!!!!!
Worth every penny. Great service at a price that pays for itself with the improved economy. Can't recommend this company enough. Many thanks Winston ��
Pawel Wey

Very good service
highly recommend
You can feel the difference after treatment

Chris Law

Excellent service yesterday getting my insignia dpf cleaned it took a little while but it was expected with the state it was in. Took it for a test drive once it was finished and the power was back straight away. Thanks
Rob Knight

Redha came bang on the time I booked,with a 30 min reminder from him that he was on his way,really friendly geat service. He remaped my golf mk6 and the difference is amazing,well done Redha and team....would highly recommend this company to anyone thinking of having the same

Hannah Pugh

Had my car cleaned today on a platinum service. Outcome was brilliant and technician put a lot of effort into ensuring this outcome! Would highly recommend for anyone with a diesel! Will most definitely use again!
Dale Purves

Had my bmw 3 series done today by James and the car really does have a new lease of life! The process didn't take long and James even drove me down to a cafe whilst I waited. Great service and will definitely be a repeat customer!

James Laidlaw

Got my Isuzu D max carbon cleaned and remapped. And i couldnt be happier with the results the flat spot above 2800rpm has gone there is a smooth increase of power from around 1700 all the way to about 4000rpm. James was knowledgeable and a good guy to have the craic with while the job was getting done.

3-stage engine carbon cleaning

Citroen C3 EGR carbon cleaning with client review

UNDERSTANDING THE EGR VALVE SYSTEM

The purpose of the EGR (Engine Gas Recirculation) system is to reduce nitrogen oxide (NOx) emissions that primarily forms when nitrogen and oxygen is subject to high heat and pressure. Nearly all modern diesel and some petrol engines require an EGR system to meet emissions regulations. The system is designed to recirculate exhaust gases back into the intake system which reduces either O2 in diesel engines intake stream or combustible matter in a petrol engines intake stream. These gases have little or no ability to react to the second combustion cycle they are subjected too thus helping to reduce combustion heat and in-cylinder temperatures.

Unfortunately, these recirculated exhaust gases carry a lot of carbon, unspent fuel (including varnishes) and oil vapour which gradually accumulates and bonds as carbon particles inside the inlet and re-circulatory system and especially on and around the valve itself. This leads to numerous engine problems and worst case even engine failure.

The specific purpose of the EGR valve determines if, when, and how much exhaust gases are recirculated. As carbon deposits build up in and around the valve it prevents the opening and closing of the valve operation, and worst case the valve can become stuck losing all functionality.

Usually, the initial driver symptoms of the clogging of an EGR valve is loss of power, excessive black smoke under load, engine management lights, limp mode, and engine stalling, especially when coming offload. Eventually, the valve will stick in either the open or shut position. If stuck open the carbon build up saturation will be accelerated whilst if stuck shut it will cause excessively high emissions and ultimately MOT and/or roadside emission test failures.

How to clean the EGR Valve

There are numerous ways to clean or replace the EGR valve with varying prices.

The costliest option is a complete replacement part and a clean. Most mechanics will recommend this – Why? Because they'll earn a profit from the part and it's a quicker job for them. The price of a EGR valve varies on average between £300 and £1,500 plus labour for fitting. At the time of replacement, or just before, it's important that the rest of the EGR system is also cleaned otherwise carbon deposits within the rest of the system will likely clog the new component.

The moderately expensive alternative is to remove the valve and manually clean it which requires mechanical skill and time. The problem is not all valves are so easy to remove and refit and the outcome may not always be successful. Of course, it's not just the valve though, there are all the associated pipes and if fitted the cooler that must also be cleaned. Expect prices to be anywhere from £200 – £500 for such a job if done correctly rather than just the valve.

Then there's our service, the most cost-efficient option. Even if the valve has failed and therefore the clean doesn't resolve a valve issue completely at least the rest of the EGR system will be cleaned ready for a new component which on its own will save you money!

Faulty Engine? Underperforming?

FREE Engine Diagnostic

Let's fix it

Book a Service

Call an agent

Either you've entered an invalid postcode or online booking for this location is not yet available. Either enter a valid postcode or call us on 01293 769495 for further assistance.

Engine Firing up..

1 Identify 2 Details 3 Diagnosis

Prices for Vehicle Type