This car i just bought smells like gas when it is running and the smell comes and goes. Sometimes the smell is strong when you hit that gas, sometimes when your just cruising. But always sputters at quater throttle. Spark plugs look lean. White White White.(replaced) Also replaced everything from the fuel filter to the fuel rail. Please help. I do not see any fuel leaking anywhere. It use to leak fuel at the filter when i bought it, but i tightened the fitting and it stopped. But still has not fixed any of the symptems. BTW, i am in school as automotive system tech so i can run any test that anyone may suggest. Thank you guys for your help.