Guys, a quick question.
The idles normally around 1200-1400, but a month ago, I noticed that it progressively dropped, and eventually fell down to 800. So, went and adjusted the screw back up to the normal levels, but again this week they have began to drop, now down to 1000.
So, I figure there is an issue, and I will take it to the garage to look at. But I am more curious, before I send it, as to what the cause could be. Something simple like a spark plug, or something more "serious"?????