running rich

What do you smell and where exactly is the smell comming from?
When do you smell it?
How does the car drive?
How does it idle?
Does it give off any black Smoke from tail pipe when you rev it?

You should check the spark plugs to see what the conditions are going on in there. If the Spark plugs look ok, then I would start looking for a leaking or seaping from one or more fuel lines.

If the plugs show signs of a rich mixture then lets go from there, when we get there.

Let us know what you find.........