i have a 1990 toyota pickup and at idle you can smell unburnt fuel and i have no clue what it could be i thought it was spark plugs at first so i changed those but that didnt make a difference at all except give me a little extra power please help.

 

How is the truck running?

 

it idle fine runs smooth but that dang gas smell i was thinking an injector is bad or a fuel pump or fuel filter