I searched the forum for starting issues but non quit like mine. The tractor is a 2007 CK27 shuttle shift. It has only 49 hours on it. Lately I have to crank the engine excessively to get it to start, when it finally does start it surges and has very little power until it warms up a bit. Lifting the bucket before it warms up will almost stall the engine. Once it is warm it runs normally and will start just fine. From what I have found on this forum it sounds like it could be the injection pump, what is odd is that it runs fine once started and warmed up.