How is it running? Is the mileage ok? Have you checked the computer diagnostic codes? It's possible that the ignition isn't doing well and you're getting unburned hydrocarbons out the exhaust. It's possible that the oxygen sensor is bad and that the engine is getting too much fuel in an effort to compensate. It's possible that there is a problem with the EGR valve or even the catalytic converter.
i had a fuel leak
exhaust leak or a possible fuel line leak
Your fuel system might have a leak if the strong smell is similar to the smell of refuelling. Or the exhaust might have a leak allowing fumes to get in the cab with you. Diesel fuel has a strong oder if burnt in a rich mixture an in under hard acceleration.
A miss, black smoke and a strong gas smell. Also, bad acceleration, rough idling, and stalling.
too much fuel (unburned) getting into the exhaust. could be your oxygen sensor or catalyst converter. less likely, a leaking fuel injector
A strong smell of aromatics coming out of the exhaust could indicate a rich fuel mixture or an issue with the catalytic converter. It is best to have the vehicle inspected by a mechanic to diagnose and address the underlying problem.
What color is the smoke? Black - running rich. Bluish - buring oil. White - burning coolant. When you smell the gas, it is inside or outside the minivan? Back of the car or near the front?
The engine may backfire excessively. You may also smell a strong exhaust odor in the riding position. In worst cases, it can cause the engine to run lean.
Ur exhaust....
There might be a hole in the silencer boxes.
I was told that this might be the EGR Valve either is clogged or going bad.
Take a second, lightly sniff gasoline fumes before its been burned, then compare with exhaust fumes, and see which you are smelling. Exhaust fumes you'll naturally smell around an idling car. unburned gasoline could be the result of an improperly set carb, mixing the wrong amounts of fuel and air, leaving you with unburned gasoline that is boiled, evaporated, and spit out the exhaust. Too much evaporated gas turns your exhaust black, so ive been told, so there could be a sign.