2002 Roadhawk. The motor sounds like it pops through the exhaust. Does it at idle but not going down the road. Doesn't sound like it is missing or backfiring just popping. Doesn't seem to do it as bad after it warms up. I checked the valves today and I had one pretty loose and another a little loose. Adjusted those two and the rest were ok. When I fired up it was still doing it but when I went up the road a couple of miles and stopped at a red light it wasn't doing it. I went to a friends house and was there about thirty minutes and when I fired it up to come home it was really popping bad then it seemed to quit after warming up. It runs fine going down the road.
It does have a little hesitation when going through the gears but picks right up after giving it the throttle. It is a stock set up 1600cc with dual webers and electronic ignition. I haven't done anything except check the valves. Any help would be appreciated.