28/08/2026
"Now we're sucking diesel" means things are going well, making progress, or achieving success.
Definition and Usage:
The phrase is an Irish slang expression used to indicate that a situation is improving or that someone is performing well.
It can be applied to personal achievements, work progress, or any scenario where momentum or success is evident. For example:
"I just got a promotion at work, now I'm really suckin' diesel!"
"Ever since I started my new exercise routine, I've been suckin' diesel!"
"Our business has been booming lately, we're really suckin' diesel!"
Origin:
The expression originated in Ireland and is derived from the mechanics of diesel engines. Historically, restarting a diesel tractor after it ran out of fuel required creating a vacuum to pull fuel into the cylinders. Once the engine started running smoothly, work could resume, and the triumphant declaration was: "Now we're suckin' diesel!". This imagery of a diesel engine running efficiently became a metaphor for things going smoothly or successfully.
Cultural Context:
The phrase is commonly used in Irish English and is part of everyday colloquial speech. It is often used in response to a question about progress or to celebrate a positive development
It can also be used humorously or enthusiastically to mark a turning point in events, such as completing tasks or achieving goals.
Summary:
In essence, saying "now we're sucking diesel" is a colorful way of expressing that everything is on track, moving efficiently, or going well, reflecting both Irish humor and practical imagery from rural life.