verb[with object] British
Remove carbon or carbonaceous material from (an internal-combustion engine).
More example sentences
- If you see the stuff on the shelves its worth a try it decokes the engine, getting rid of the carbon deposits.
- Buy it a new spark plug, and decoke the exhaust.
- Power Boost cleans and decokes the engine for better performance, better acceleration, smoother running, lower emissions and improved economy.