my 2210 started smoking worse than normal while running, used to be it would smoke upon startup then clear up, now when it starts up it acts like it wont build rpms and its loading upwith fuel and smoking like a chimney, it will do that for about 30 seconds then to the normal rattling like a 2 cylinder does, im thinking injectors, i can shut it off while its been running for a while and it will do this everytime upon startup even after setting for just a few minutes. i can feather the trottle and it just smokes worse and still won build rpms any faster, my first thinking was head gasket not getting the compression it needs but now leaning towards injector, any opinions would be great, how do i tell if it is a injector thanks in advanced Ron