hi i hav had the fuel filter changed... was told by the mechanic tht it looked like the original fuel filter in the car... maybe had been changed once in the cars life (this is at 105k miles) i havnt noticed the smell as much... but the smell is slightly still there, wht else could the smell be?? the mechanic also said that it could be the spark plugs not burning fuel fully... how do i correct tht issue if it is the plugs???