These days, with the high price of fuel and the pressure on "up-time", nobody can afford to run an engine that is not operating at its peak efficiency.
The presence of misfires or rough running mean that the engine is struggling to do the job being asked of it - and therefore it is not doing it so well and using more fuel in the process. A misfire can also be an early warning for a much more serious engine event.
If your engine has one of these symptoms, it means that, in your own best commercial interest, you should act promptly to have it corrected.
Not all such symptoms mean a monster repair bill - in fact, addressing these issues early will more often than not save you from a monster repair bill.
If you have any concerns, especially with a misfire, when you are a long way from home, just give us a call and we will try to advise you on the best course of action. Many misfire symptoms can be corrected quickly and relatively painlessly.
If you are local, just pull up out the front and we'll give you our diagnostic opinion - free of charge.