backfire

se retourner contre, avoir l’effet inverse

Produire l’effet contraire à celui recherché et aggraver la situation.

En anglais simple : To have the opposite effect from the one intended, making things worse.

• His plan backfired.
• The joke backfired and upset everyone.
• Their attempt to save money backfired on them.

Comment l'utiliser : backfire on someone (The threat backfired on the manager.)

Synonymes : boomerang

Expressions courantes : backfire on someone, backfire badly, plan can backfire

pétarader

Pour un moteur, brûler du carburant au mauvais moment ou endroit et produire une détonation.

En anglais simple : For an engine to burn fuel at the wrong time or place, producing a sudden bang.

• The old car backfired.
• The engine backfires whenever I start it.
• A motorcycle backfired loudly outside our window.

Expressions courantes : engine can backfire, car can backfire, backfire loudly

détonation dans l’échappement

Explosion dans les tuyaux évacuant les gaz du moteur, souvent accompagnée d’un grand bruit.

En anglais simple : An explosion in the pipes carrying gases away from an engine, often making a loud bang.

• A loud backfire startled us.
• The motorcycle produced a backfire from its exhaust.
• Unburned fuel caused a backfire in the exhaust pipe.

Expressions courantes : exhaust backfire, a loud backfire, backfire from something

contre-explosion

Explosion dans un moteur au mauvais moment, pouvant repousser une pièce mobile en arrière.

En anglais simple : An explosion inside an engine at the wrong time, which can push a moving part backward.

• A backfire jolted the engine.
• The mechanic traced the backfire to early ignition in the cylinder.
• A severe backfire pushed the piston backward.

Synonymes : knock, ping

Expressions courantes : engine backfire, a sudden backfire, cause a backfire