I recently got a 330. It starts, idles and runs at any speed fine. But when I give it the gas at either low or high rpm's, I get a momentary hesitation. No backfires.

It got low mileage - 190 - for a 2004. Part of me suspects it just needs to be run for a while, but I also think it needs fuel system cleaned and check the air filter.

Any ideas or advice?