Civic coff?

[Enigma]

im just wondering ive got a breeze 92 civic and lately some times when i turn the car off, it makes like a coff action with the engine still running. What the hell is going on?

[bennjamin]

perhaps unburnt fuel is being sucked thru the carb into the engine and igniting due to heated up carbon deposits in the head...after the engine is technically turned off.

[Enigma]

i dont know but its been happening a fair bit latetly maybe a service, or tune up?

[DLO01]

Is that a Carby model?

Pre-ignition. Even though the ignition is turned "off" the fuel is being ignited by hot spots, carbon, excessive heat, etc and causing "run on"

[Weq]

its called run-on and its because of carbon buildup auto-igniting fuel.

[Enigma]

so its because of carbon buildup auto-igniting fuel. fair enough but any idea in how i can fix it? carby cleaner?