It might be you fuel regulator it will be leaking very little but enough to get that gas smell in the cab. Becarful not to misjudge it for the 4 injector leaking cause gas will run down right on top of it. It sits on top of your fuel rail and it has a vacum line and a fuel line going to it. It it is leaking it will more than likly be from the rolled metal round piece buy the vacum side. Its an easy fix but it cost aroun $60.
It may be you have a bad injector or fuel rail or a bad intake gasket i would also stop by my local library and get my hands on a Haynes auto repair manual for your car Merry Christmas & Happy New Year as always wish you the best of luck Michigan Man.
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