Just joined the board today. Hello all. I hope to add to all the great conversations going on here. I have a bit of a problem with an 82 BMW r65 I recently picked up on the cheap. It was not running well and I discovered the left side plug was bad so I replaced them both. The now starts and runs but after about a minute or two, a lot of smoke comes out of the left pipe, a little out of the right. I tried a bunch of stuff to narrow this down. Valve adjustment (tight now good) compression check (130 in each cylinder) timing check (good) new carb floats general carb cleaning I even swapped all the jets, needles and diaphrams to see if there was any way to isolate the problem So now I an a little lost. I don't think the carbs look bad but wonder if I could do a $70 overhaul if I don't know it will help I wonder if it is engine richness I am seeing and smelling. I think it is but am not completely sure. The next thing I'm going to do is inspect the enrichers and see if thee is anything obviously wrong. Has anyone here experienced something like this? Thanks for any advice.