Man I have a problem with a 23 hp v-twin vanguard. It is surging at idle and I had changed fuel filter and plugs when i took off air cleaner it seems to run smoother and also when I take out the fuel filter it helps. I do have some smoke coming from the black vent hose that hooks to the air cleaner. I adjusted the governor and that helped a little but now I"m stumped. any help would be great.