Trying to start this S2200 is almost impossible. Cranks like crazy with grey smoke but doesn't get to the point of running most times. Sometimes it will start running but very slow (less than 300 rpm) and after 20 seconds or so will just slow down and stop. If I move the throttle a little it dies quicker. On 2 attempts, it actually built rpms and ran normally. Was even successful on a restart after a 40 minute rest. Now I can't get it to start at all. Need help arriving at a solution if anyone has ideas.