I have a 78 that was hard to start this morning. I finally got it started and it was running rough. I drove it 2 miles down the road and noticef a huge puff / cloud of smoke at the red light. I noticed the oil seems to be leaking out pretty good but here is the kicker.........the oil seems thin and smells strong of gas. I have a Weber Carb and an inline fuel pump. Where should I start on this? Dropped a ring? Head gasket? I'm open for suggestions. Thanks for any help in advance.