the gas tank has lines going to a charcoal/evap canister to capture evaporating fuel vapors when the car is off and a purge valve to release the vapors to be burned by the engine when the car is at operating temparture
you have regularly topped off your gas tank and have flooded the charcoal canister and broken the purge valve. you are now sending fuel to the engine insted of vapors and flooding the engine upon startup. this is not happen during cold startup , the valve only opens when the coolant temp is above x and car r is moving not at 0 mph UNLESS afteryou refuel because the onboard refuelding vapor revovery system tells it to open when you start becus it sensed the pressure in the fuel tank!
|