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.
- Konrad Konieczny
Hi, I just had my Civic done which has got around 180000 on the clock and I can definitely feel the difference in the rev response and the mpg are up a bit too. Also after the carbon cleaning an engine management light came up and it turned out to be faulty glow plugs. Luckily because these guys are insured Matt offered to replace all of them any paid the bill !!! I will recommend it, especially diesels with lots of miles. Thanks.Jason Marshall Frankson
I booked my 2008 VW Jetta 2.0 litre diesel in for 28/04/17. Shaun arrived early and made a start by doing an ecu fault check followed by setting my car up onto the Carbon clean machine. My engine was running for approx 30mins and during this time revved the engine to help clear any build up of carbon. Shaun was very informative about the whole process and exIained exactly what was happening during the Carbon Clean. I am very pleased with the outcome and have a peace of mind knowing my engine will be much cleaner and running more sufficient.
After the job was finished, I drove around for about 15mins, recommended and could instantly notice my throttle response was increased and could not see any cloud of black smoke in my rear view mirror. My engine also idles better and just generally feel more smooth to drive.
I have completely removed the egr valve before I had the Carbon clean done and it's made a great difference in stopping the engine oil from getting badly contaminated with carbon.
I am very pleased with the outcome and would like to thank UKCC Auto Techs for your great service. I can definitely recommend your service to anyone.
- Ahmed Sheen
6 Stars out of 5!. My Vauxhall Insignia CDTI 160 was in limp mode due to a severely blocked DPF. At first, I was apprehensive about using these guys, but after talking to Yasir, he gave me some assurances that he would clean and regenerate the DPF and carry out full pre and post regen diagnostics. Upon arrival, he also suggested a stage 3 clean using Hydrogen to clean the Intake, manifold, egr valve, turbo and the engine and the benefits it would give. I booked the service, and 4 hours and £350 later, the car drove like new, quieter, cleaner and faster. I found Yasir to be professional, knowledgeable and very competent. I reccomend this company very highly for your DPF Regeneration and/Hydrogen clean of the engine.
- SharonJaydee Middleton Sharkey
I Had my work van (Holmes Domestic) and Nissan Navara Carbon Cleaned by James. He was very polite, well mannered and very well presented. He talked me through the process, and explained everything down to the finest detail. Had both vehicles for a run and what a huge difference, so much quieter and definitely more power! I notice the difference that much I’m getting my other van done! Only regret, wish I had got this done sooner as I’ve noticed such a difference!! Thanks again James for your 1st class service � see you at the end off the month to get the Transit Custom done.Bello Mcbello
Liked every aspect of organising the clean to getting the clean done. My car was stuttering severely (at 30pm in kia c'eed 2) in 4th gear. Now it drives fine in 4th at 30mph. Also think performance has improved - in general. Very happy with the service. Not to mention a fault was cleared using his diagnostics machine with no additional charge!
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!
Preventative cleaning starts from as little as £89.99 (for a car)
If your vehicle has an EGR issue, or has even failed an EGR manual clean by a garage, and therefore requires further assistance to resolve the problem there is no better alternative than a skilled UKCC technician providing our 3 or 4-stage carbon cleaning service.
From just £149.99 (for a car). The advantages are:-
- Our Mobile Carbon Cleaning Technicians come to you
- Potentially no expensive parts
- No disassembly is required, therefore no expensive labour
- Completed in an average of 45-60 minutes so no requirement to leave your vehicle with a garage for days on end
- We are fully insured to complete this service at the roadside or wherever your vehicle is located
If you require further information please visit our Carbon Cleaning FAQ’s section, contact your local technician or our HQ team on 01293 769495 to discuss your requirements, or use the inquiry form below and we’ll get back to you at your convenience.
Click on the following links to view our other engine cleaning services – Carbon Cleaning | DPF | Oxygen Sensor | Intake Valves | Spark Plugs | Catalytic Converter | Intake Manifold and Swirl Flaps | Turbocharger | Fuel Injectors | Smoky Exhaust