for starters it has black smoke and leaves black on ground (rich?) and 3 times already i get off interstate and get like 100 feet off ramp and puff comes out alot of white( im guessing) smoke. so i turn car off then on then off and do that a few times till gone. i check compretion and 175 across. new wires and plugs. what can it be please help. its a ls swap in crx obd0 using zc ecu and wiring harnees btw.