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.
- Darren O'Hare
Had a Stage 3 carbon clean on my Ford Mondeo 2.2TDCi which has covered just over 100,000 miles. My car would on occasion smoke badly under hard acceleration and I also felt that it had a bit less power of late. James was punctual, professional and talked me through the cleaning process. Having just come back from a test drive, I am delighted with the results. The car now ticks over at a lower rpm, is a little bit quieter and certainly accelerates quicker particularly in 3rd and 4th gear. Would highly recommend.
Just a quick follow up to my review which I posted on 10 March 2018. Since then I have covered over 800 miles and am now averaging 40.5 mpg which is around 5 mpg better than I was getting before the carbon clean. Definitely impressed with the results.
- Mark Wilson
Great service from James. Recently had my transit van remapped and can honestly say it is like driving a different van. There is so much more torque which means I’m not constantly having to change gears. James explained what he was doing and why at every stage. Will definitely be back in future
- Duncan Samson
Met James this morning and had my 1.6 diesel golf carbon cleaned, unfortunately we were unable to map the car after James discovered a steel safety cage around my Ecu which would’ve been a risky job getting off. The carbon clean made a noticeable difference to the car and restored some performance to the engine. Very happy with the work done and James was very knowledgable as he talked me through each step of the carbon clean.
- Cheryl Sillery Brown
What can i say except 5* service. Red came he explained everything. I told him my long complicated hystory of 4 different diagnosis from different guarages with no diffinitive answer. He did the carbon and chemical clean..i watched as the black carbon left my cars engine. We took it for a test drive. Wow and i mean wow the difference in the power and smoothness of the engine was unbelievable. My car still went into limp/safe mode (original prob) red popped it back onto computer diagnosed my glo plug prob... not £1500 worth as turbo as quoted before.
Anyway booked in garage tomorrow for repaire and full oil change and he wants to know outcome. And if i still have problems he will come back to re-diagnose but i dont think he will need to....i was sceptical about it being worth doing but from the TOP RATE CUSTOMER SERVICE TO THE AMAZING CLEAN TO MY ENGINE IT WAS WORTH EVERY PENNY.
Thankyou Red. I will see you very soon to come clean my Bmw engine ���
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 | Turbocharger | Fuel Injectors | Smoky Exhaust