1981 GS750 faint smoke

[mdturner]

Hey there,

Just picked up a 1981 GS750 and noticed some smoke coming off the head when I parked it. It's not thick smoke but noticeable in the right light. It's not coming from the gasket and appears to be coming off the inside cylinder on the right side (cylinder 3?). It doesn't happen every time I ride, just when I ride in excess of 30 mins and not if I'm riding super mellow. The guy before me fixes bikes and flips them and said it was sitting before he got it. It starts easy and idles about 1100-1300 rpm. Could it just be running lean? Maybe burning off some gunk from when it was sitting? What do you all think?

EDIT: Unrelated but it had pods on it for awhile and the PO took them off and fabbed up a plastic intake that's pretty meh (utilizes duct tape ) what have you guys done for a custom intake that's comparable to stock?

 

[VonYinzer]

Does it come from the exhaust port?

 

[mdturner]

definitely not from the exhaust port, looks like it's coming from right around the plug

 

[VonYinzer]

Well... Thats not good. Is the plug loose in the threads?

 

[mdturner]

that was my first check but it was fine, I just cant think of where else it's coming from.

FOUND IT: I was checking all over the place and stuck my finger down around there when I heard a crunch. There was a little leaf lodged between 2 fins that was smoldering.. Hit it with an air compressor and a couple others came out all a little charred. Glad I caught that when I did