This leaf blower was used by homeowner for one season. When I put it away, it ran out of fuel so I just stored it for the winter. In the spring, it would not start. Has a bright blue spark, has new gas, carburetor is clean,head bolts tight, carb bolts tight, and should fire up. I checked the compression and it was 65 to 70 lbs. Would this stop it from firing at all. I put a small amount of gas in the spark plug hole, and still would not fire. I bypassed the shut off switch, still no change. Usually I can get engines to run, but this one is a puzzle I would like to solve. Any input would be appreciated. Thank you.