What color is this smoke? If it is black it is excess fuel. If your previous carb was very rich the excess fuel may still be in the engine & exhaust system. I f you have A PCV sytem it can be pulling fumes out of the crankcase. Your plugs are probably carboned up but can be cleaned. I use one of the cheapy spark plug sand blasters. If you have compressed air available it can save buying new plugs when they get carboned up which is real easy with todays gas.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum