I was given a john deere 24a skid steer and ive been working on if tor about a week now. it was sitting for 25 years. i got a new battery and new starter. and i have fresh fuel to the injector pump. and have bled it to the injectors. i am waiting for a fuel filter in the mail. what concerns me is when i was turning it over there was hardly any smoke coming from the exhaust but there was smoke coming from the block relief valve an the side of the block. i took the muffler off and the smoke really started coming out the exhaust while turning it over. it is hard to see but i think there is still a very small amount coming from the valve on the block. does this mean the rings are shot? im pretty sure its getting fuel. im going to pull the injectors monday but i dont want to keep spending money if the motor is shot. what do you guys think?