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Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
  • Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
  • Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
  • Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
  • Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
  • Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
Catalytic Converter & Engine Carbon Deposit Cleaner Novva Living
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Catalytic Converter & Engine Carbon Deposit Cleaner

Catalytic Converter & Engine Carbon Deposit Cleaner

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Novva Living · Travel Essentials Catalytic Converter & Engine Carbon Deposit Cleaner. A 3-way formula that dissolves and flushes carbon deposits from catalytic converters and engine internals — no disassembly required. Add to the fuel tank and drive. Helps restore engine efficiency...

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Novva Living · Travel Essentials

Catalytic Converter & Engine Carbon Deposit Cleaner.

A 3-way formula that dissolves and flushes carbon deposits from catalytic converters and engine internals — no disassembly required. Add to the fuel tank and drive. Helps restore engine efficiency and reduce exhaust emissions.

3-WayFormula
120mlPer Bottle
ZeroDisassembly
AnyPetrol Engine
No DisassemblyAdd and drive
3-Way FormulaFull system clean
Carbon RemovalDissolves deposits
Restores EfficiencyReduces emissions
01No Disassembly — Add to the Fuel Tank and Drive

The cleaner is added directly to the fuel tank and works as the engine runs — the formula travels through the fuel system, combustion chamber, and exhaust pathway as part of normal driving. No access panels need to be removed, no parts need to be disconnected, and no workshop visit is required. The cleaning action happens in the time it takes to drive through a tank of fuel, making it a maintenance step that fits into a normal journey rather than a service appointment.

023-Way Formula — Fuel System, Engine Internals, and Catalytic Converter

The formula is described as 3-way because it targets three distinct areas of the engine and exhaust system simultaneously: the fuel system (injectors and intake), the combustion chamber and engine internals (pistons, valves, and cylinder walls), and the catalytic converter and exhaust pathway. Carbon deposits build up across all three areas over time and each area benefits from treatment — a formula that addresses only one leaves the others untreated and limits the overall improvement in efficiency and emissions.

03Carbon Removal — Dissolves and Flushes Deposits

Carbon deposits form on injectors, intake valves, piston crowns, and catalytic converter substrate over time through normal combustion — the process accelerates in vehicles used primarily for short journeys, stop-start urban driving, or on older high-mileage engines where combustion efficiency has declined. The cleaner dissolves the carbon chemically so it can be expelled through the exhaust rather than requiring mechanical removal, which is only possible with disassembly.

04Restores Efficiency — Better Performance, Lower Emissions

A catalytic converter blocked with carbon deposits cannot convert exhaust gases as efficiently, which raises measured emissions and in severe cases triggers the engine management light. Injectors partially blocked with carbon deliver uneven fuel spray that disrupts combustion and reduces fuel economy. Cleaning both restores the efficiency the engine had when the carbon was not present — the improvement is most noticeable in vehicles with high mileage or a history of short-journey use where deposits accumulate fastest.

Product SpecificationsCatalytic Converter & Engine Carbon Deposit Cleaner · RayHong
BrandRayHong
Volume120ml
Formula3-Way — Fuel System, Engine Internals, Catalytic Converter & Exhaust
ApplicationAdd to fuel tank — no disassembly required
TreatsCarbon Deposits · Injector Deposits · Catalytic Converter Blockage · Intake Valve Carbon
Best ForHigh-Mileage Vehicles · Short-Journey Cars · Emission Reduction · Engine Maintenance
In the Box1 × 120ml Catalytic Converter & Engine Carbon Deposit Cleaner
  • Add the full 120ml bottle to the fuel tank before filling up with fuel — adding before fuel ensures the cleaner mixes thoroughly with the full tank rather than sitting at the bottom.
  • Fill the tank with fuel as normal after adding the cleaner.
  • Drive as normal — the cleaner works as the engine runs through the tank of treated fuel. No special driving cycle is required, but a motorway run or extended journey at sustained speed is more effective than short urban trips for catalytic converter cleaning, as the converter needs to reach full operating temperature to convert effectively.
  • Use every 5,000–10,000 miles as a maintenance interval, or when symptoms of carbon build-up are present (rough idle, reduced fuel economy, emissions warning light, loss of power).
Check the product label for compatibility with your fuel type before use. This product is designed for petrol engines. Do not use in diesel engines unless the label explicitly states diesel compatibility.
  • Engine management light: a catalytic converter fault code (P0420 or similar) often indicates the converter is operating below efficiency threshold, frequently due to carbon contamination rather than converter failure.
  • Rough idle or misfiring: carbon deposits on intake valves or injectors disrupt fuel delivery and combustion, causing rough running particularly when the engine is cold.
  • Reduced fuel economy: blocked injectors deliver uneven fuel spray that reduces combustion efficiency and increases fuel consumption over time.
  • Increased exhaust smell or dark smoke: signs of incomplete combustion often related to carbon deposits in the combustion chamber or injector fouling.
  • Failed MOT emissions test: elevated HC, CO, or NOx readings can indicate catalytic converter inefficiency caused by carbon build-up on the substrate.
  • High mileage or short-journey use: vehicles driven primarily on short trips or with high mileage accumulate carbon deposits faster and benefit most from regular treatment.
  • The cleaner dissolves in fuel and is drawn into the engine through the normal fuel delivery process — it passes through the injectors, into the combustion chamber, and through the exhaust pathway to the catalytic converter.
  • In the fuel system, detergent chemistry in the formula breaks down injector deposits and cleans the fuel rail and intake components.
  • In the combustion chamber, the formula softens and dislodges carbon from piston crowns and intake valve stems where direct-injection engines in particular accumulate heavy deposits over time.
  • In the exhaust and catalytic converter, the formula helps break down the carbon layer that forms on the converter substrate, allowing the precious metal catalyst to contact exhaust gases more effectively.
  • The loosened carbon exits through the exhaust as combustion products — no collection or disposal is required.
A single treatment addresses light to moderate carbon build-up. For heavily contaminated systems or vehicles showing persistent fault codes, two treatments over consecutive tank fills may be needed before improvement is measurable.
  • Store in a cool, dry place away from heat sources and direct sunlight — the product contains flammable components and must be stored in accordance with standard fuel additive safety guidelines.
  • Keep out of reach of children. Do not ingest. In case of skin or eye contact, rinse with clean water and seek medical advice if irritation persists.
  • Do not add to a fuel tank that is already at capacity — add before fuelling to ensure proper dilution.
  • Dispose of the empty bottle responsibly — do not pour unused product down the drain. Follow local authority chemical disposal guidelines.
Verify fuel type compatibility on the product label before use. Use of an incompatible additive in the wrong engine type can cause damage and will not be covered under any product warranty or vehicle manufacturer warranty.
Built for Engine Health

“Carbon build-up shouldn’t need a mechanic — a formula that flushes the system clean without a single bolt removed.”

No Disassembly 3-Way Formula Reduces Emissions
Before you buy

Check the product description, selected options and package contents before ordering. Follow the product’s instructions and safety guidance.

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