Engine Misfire

[Seeker]

Hi...my qg15 is a slight misfire while idling and stumbles in acceleration. I suspect its one of the coil packs
but how can I know which one because the misfire is not constant and (2) a reliable technician/mechanic in Central
to solve this annoying issue it becomes worse.

Thanks

[nervewrecker]

Unplug the coil packs one by one till you find the problem.

[Seeker]

Thanks