I have been helping a friend work on his 1974 johson 50hp outboard. he had the carbs rebuilt because it wouldnt run but after he got it home it ran once or twice at very low power and then wouldnt run. I checked lines, tank, changed the primeing bulb and rebuilt his fuel pump and had some results with that. We could get it to run for 10 seconds. After we had it "running" i started to adjust the carb and it just died out. After that it would fire 7-8 times full choke and then die. I took the intake cover off and noticed brown oil in the intake. Could also see where the airflow was sucking it into the carb. I do not know much about outboards and was hoping some one could tell me what it is from. It apeared to be coming from a small hole in the bottom of the intake housing. Its the small hole on the bottom corner of part number 28 http://www.marineengine.com/parts/j...&manufacturer=Johnson§ion=Intake+Manifold This was also the first time he had the motor tilted when i got to his house witch im guessing was the cause. Also would it possable for the oil to block the carb and keep fuelfrom flowing through it causeing lackof fuel. I wouldnt think oil in the fuel would cause it toonly fire with full choke.