To go a little further with this, has anyone ever had a road draft tube that they know was clogged up? My 1954 235 engine blows some smoke out the exhaust, so I'm sure its pretty loose inside, but the oil filler cap on the valve cover bounces around visibly when the engine is running, emitting little puffs of blue smoke.
I'm hoping that the road draft tube is clogged rather than this being a case of severely worn piston rings. The engine runs fairly well and does have poser.
