I have a CK30 with only 200 hours. Its been about a month since I used it and when I first started it, no problem, let it warm up 5 minutes turned it off, then it wouldn't start. Just turns over. Thought might be air in fuel lines. Cranked it over with fuel switch in "air" mode, still not firing up. Fuel pump is pumping and fuel return lines have flow but when I removed lines from injectors, no flow when turning it over. Not sure why there is no flow through the metal lines. Am I missing something? Is there a shut off switch prior to the injector lines? Any help would be really appreciated.