So been working on my project boat, finaly had time to get my second engien running. so far what i have done, i have replaced points, condensor, and spark plugs. Also rebuilt the carb. It now starts and runs good. will sit at idle all day long no problems. but as i bring it up off idle i assume around 3000 rpm, no gauges right now as i am running the engine outside of the boat. it will start to cough a puff of white smoke. Which i know is oil burning but i am not sure why. my cylenders all measure 135 to 145 except number 1 which is runing at about 100. no smoke on decel or idle. lots of smoke on hard accel blip of thorottle. the smoke puffs seem random when holding mid rpm. I want to say rings but on this old gm 250 inline 6 im not sure if i am headed in the right direction. my next thought is to do a leak down test and see if i can tell if it is valves or rings... am i headed in the right direction? also any tips or thoughts or things to look for as i move forward?
