Hey everyone. my 79 f150 with the 300 inline 6 just started smoking. If you are facing the motor it is on the left side just under the carb. i tightened all the valve cover bolts and cleaned off any oil on motor and it is still doing it. It doesnt do it until motor gets hot is why i thought it was oil just burning off.it only comes from that one spot and it seems to be coming from a bigger bolt that is right under the valve cover a little more than half way back from start of valve cover.. Its not a whole lot of smoke but when you pop the hood up you can see it come up steady and it continues to do it when motor is off. so would it have to be oil burning somewhere? thanks alot its got me stumped.