4 stroke motors?

[viperman]

Kevin, pull a spark plug and just sniff it, this will tell you if you are getting fuel to the cylinders. The air hose running from the box/filter to the carb doesn't really even need to be there, so with it being loose won't be causing the problem. I'm guessing it has a magneto/pull cord start. I'd see if you can replace that (if you are indeed getting fuel to the cylinders). How old are the spark plugs? Are they fresh clean ones, or are they old and grimy? IF they are old and fouled up, there will not be enough of a spark for ignition. If this is the case, definitely replace the plugs, and make sure they are gapped properly. Too big of a gap and the spark won't be able to fire, too little gap and the fuel won't ignite.