after putting a brand new head.dizzy.plugs.wires.hd gasket on my civic started smoking and smells like all gas no sweet smell n not losing coolant or oil. any advice on what it can be already replaced so much trying to find problem even tested injectors professonaly still cant find problem no leaks or hose leaks as well any tech advice apreciated cant think of what else it could be

 

What have you replaced?

Have you done a compression test?