boofhead
Hi mate, when you ask is it carb iceing or not ? In a pa28, first you should be aware of the weather conditions your flying in. Humid conditions are perfect for carb iceing! ie, plenty of moisture in the air. Next there would be a slight drop in revs accompanied by a rough running engine, now i hear you say, could be a lot of things! but as carb iceing is one of the most common reasons for that type of problem, application of carb heat would be my first reaction.And to leave it on for a good few minutes to dislodge any ice that may have accumulated. I would then move onto the next checks given time etc.