hi i have a 84 atc200x that i started restoring.when i first got it runing it smoked and did not stop so i whent on and bored it and put a new piston.but befor i but the the piston i started it with out the header(didnt have it)and it was spiting out oil after every kick once i got the cylinder back from the shop i but the the hole stock exhast system and started the bike.i left it one for about 2 hours then 2 the next day and did not smoke at all.then a couple days later i started it and it smoked when it started.but after maybe 5min it will stop somking and wont smoke the rest of the day..it did the same thing the next day..but when it starts on the first kick it wont smoke at all...i checked the oil and it was a little higher then it should be... im going to change the oil and fill it how it should be this weekend
but can anybody have a idea of what else it could be