Cutting out smell gas - Protege Mazda Cars & Trucks

The P0441 code indicates that there is improper purge flow in the EVAP system. There are many things to check for this code. First a loose gas cap can trigger this code, Remove gas cap and check the rubber seal on cap, put vaseline on the seal and replace back on vehicle, or replace cap if bad. A broken or loose vacuum line, and also check the purge valve in charcoal canister. Hope this steers you on the right track. God-Bless! Rotten egg smell is caused buy a bad converter-- Here are five signs that something may be wrong with your catalytic converter:

• Your vehicle's fuel efficiency suddenly drops.
• Your vehicle doesn't accelerate when you step on the gas pedal.
• Your vehicle may refuse to start.
• Your vehicle fails an emissions test.
• The MIL or Check Engine light comes on.

Could be a faulty O2 sensor. The sensor would not take action until the engine warmed up. Have you checked for trouble codes in the engine computer ?

possible a vackume leake

sounds like something came unplugged, a wire to oxygen sensor or some other sensor that tells the computer what your fuel mixture is so it can adjust, also could have a leak in gas line which would allow air into system and make smell of gas

run the fault codes and check for problem heated oxygen sensors(HO2S) and blocked cat converters

Are you able to determine where the fuel smell is coming from ? This is usually an indicator of a fuel leak. Why did you have to change the catalytic converter ? Is this the smell you are talking about ? Exhaust fumes are different smell from fuel leaks.

A mechanic would check the vapor canister to see if it is full of liquid gasoline. If it is, you would need to replace it and find out if the EVAP system is working correctly. It should only have fumes in it from the tank.

Pull your vacuum line off your fuel pressure regulator and see if it smells like gas in line or if gas runs out of the line.

look for leaks!! if the line you reconnected isnt leaking then you are just smelling the gas that leaked out while you did the reconnection. there should be nothing to worry about then. if it has been a few days and you still smell it then look for leaks in other places.

it is likely that the access plate that the pump is under is not sealed, most likely the O ring seal got installed wrong or cut and gas is leaking by it, not enough to drip on the ground but enough to smell.