misfire

Hi guys,

Just before I left to come out on tour my car would act oddly when idling, it would sound a bit off beat and the whole car would vibrate slightly, to the point where the vibration was noticeable.

My wife has been driving my car once a week to keep the battery charged while I'm away, and after driving it last night she says it has gotten a lot worse to the point where she thought the engine was going to stall at one point?

I have been reading up on the net and looks like it could be a misfire due to the spark plugs or coil packs? anyone with a similar problem?

I am back next week and have the car booked in to get checked out! any info in the mean time would be appreciated!

Thanks