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EGR faults and symptoms
Is your vehicle suffering from poor performance, reduced fuel economy, or persistent engine warning lights? These symptoms often point to a faulty Exhaust Gas Recirculation (EGR) system — a common issue in many diesel and petrol engines. At Kent Eco Tuning, we offer a reliable and efficient EGR Solution designed to resolve these problems for good.
The EGR system is designed to reduce emissions by recirculating a portion of exhaust gases back into the engine. However, over time, EGR valves can become clogged with carbon deposits, leading to:
- Loss of power and throttle response
- Increased fuel consumption
- Engine management faults and limp mode
- Costly repairs and downtime
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EGR faults: diagnosis, repair and software
The EGR system recirculates a portion of exhaust gas back into the engine to reduce emissions. Over time the valve can clog with carbon, which shows up as poor performance, heavier fuel consumption, warning lights and limp mode. Our starting point is always diagnosis: read the fault codes, confirm the cause, and explain the options in plain terms. Where the valve itself is the problem, cleaning or replacement is a genuine repair. Whether you're in Gillingham, Rochester or Sittingbourne, our mobile service comes to you.
DPF, EGR and AdBlue software changes are supplied only for genuine motorsport, track, competition or off-road vehicles that are not used on public roads. Before any such work begins, we ask you to complete and sign our Customer Declaration, which names the vehicle and its intended off-road or motorsport use. We do not offer this work as a repair or fault fix for a road vehicle.
A DPF that was fitted as original equipment but is physically missing or obviously modified is a major defect and will fail an MOT. An illuminated engine or emissions warning light, or emissions above the permitted limits, can also cause a failure. But a software change on its own is not automatically an MOT failure in every case — the result depends on the vehicle and the applicable test requirements.
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Why Choose Our EGR Solution?
Our software solution is tailored to your vehicle’s software for optimal results, balancing performance with efficiency and keeping your vehicle running clean and smooth.
Exhaust gas recirculation (EGR) routes a measured portion of exhaust gas back into the intake, lowering combustion temperatures to cut nitrogen oxide emissions. It is a genuine emissions system, and on a healthy engine it does its job quietly.
Why it cokes up: the recirculated gas carries soot, and over thousands of short trips that soot mixes with oil vapour and builds up in the valve and the intake passages. Town driving and short trips accelerate the build-up because the engine rarely reaches full operating temperature.
The symptoms usually build gradually: a rough or hesitant idle, reduced acceleration, a glowing engine management light and sometimes increased smoke. Because several faults share those symptoms, diagnosis comes first.
We read the live data behind the fault, check the EGR valve's actual operation and establish whether the problem is the valve, the control circuit or something else entirely. The repair-versus-software decision follows the diagnosis, not the other way round.
Where a mechanical fault is found, the repair is the honest answer. Where a calibration can legitimately help the engine manage its emissions systems correctly, we will explain exactly what it does. What we will not do is defeat the system on a road vehicle: an EGR delete is not a repair, and an MOT emission check will catch it.
- Improved Performance – Restores engine responsiveness and torque
- Better Fuel Efficiency – Reduces unnecessary fuel waste caused by faulty EGR operation
- Fault codes read and explained before any work is agreed
- Custom ECU Remap – Tailored to your vehicle’s software for optimal results
- Eco-Conscious Tuning – We balance performance with efficiency, keeping your vehicle running clean and smooth
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Get a professional solution today
Don't risk your vehicle with uncertified mobile tuners. At Kent Eco Tuning, we combine IMI-certified expertise with a fully insured mobile service that comes to your home or workplace across Medway and Kent. We don't just fix the symptom; we solve the problem.