Drack502

I am smelling gas only when I drive, I don't smell before or after I drive the car.

I smell it more when I drive around 80 kmh but I still smell it at different speeds.

The engine light is on but I don't have it pin pointed, it has something to do with an evap code.

I can only smell it when I have the windows down, I don't smell it with the windows up.

I find it idling a little "rough" shaking a little bit, not much just a little but when I'm driving the engine seems to run fine.

It's a 2004 civic.

Any help here would be great.

Thanks in advance.

gearbox

iTrader: (95)

more than likely a fuel vapor leak from the evap emissions system. basically a system for storing and sending fuel vapor from the gas tank to the engine so it can be burned. saves some mpg and less pollution. gonna have to trace the lines (just the rubber ones) and check the charcoal canister and purge valves. if a valve is stuck, the gas could backfeed thru the evap air filter intake in the back of the car. see if you can find whether its coming from front or back of the car.

urabus

I got the same problem, I pinpointed it to this cover beside the gas tank behind the rear driver side wheel. I tok the cover off its a multidirectional valve or something which sends the gas from the tank and has 2 electrical connectors now I cannot find out what part that is ANYWHERE online not in my hanyes manual either. Im stumped.. It's a simple leak where the 2 screws join the plastic together at the seal. If anyone knows what this part is would help alot. My car is a 98' and has the same exact problem windows down smells and there's a small leak only when the car is turned on. I got some one to rev it up while i looked at it with a flash light and I can see the tiny leak.