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Message: [QUOTE="chadster54321, post: 1433266, member: 124643"] i got a 93 yz 125 and just got the top end rebuilt and honed. Before that it had a standard piston in it and not the right size and still ran. it now has the right size and takes a half can of starting fluid and a lot of kicking just to get it started. I even put 40:1 mixture with 110 octane racing fuel in it and it still dumps oil out the bottom of the exhaust and the end of it. it feels like it has no compression either. im probably going to see if it is the jets. I got the manual and will see if they are standard if not I will change them. but somehow I feel this is not the issue. someone at a shop (c and c) told me it could be seals could be damaged or worn on the clutch side of the bottom end. im hoping this is not the case and would like some insight before I tear the engine down. I feel stuck [/QUOTE]