Hi guy's I'm a newbie I have a simplicity 16 GTH engine # 303777012201 code89071411 I can't get started. I adjusted valves, I have spark. I have taken out plugs and replaced. I can take plugs out put a little gas in cyls and get it to sputter a little bit but not start. I have fresh fuel.It seems to be spitting a bit of fuel out of carb. I'm out of ideas any help would be appreciated Thanks. Sorry Briggs Vanguard engine.