Over the last 3 weeks, I've had problems starting my car a few times. I turn the key, and the motor starts like normal, when I rev the engine it dies. I start it again, and it won't ignite as normal. I have to keep cranking the engine for a few seconds, and it will start again, but will die when i push the pedal. After 3-4 tries it is back to normal. The few times this has happened it is cold -4 - -7C, and the car had been standing still a couple of hours after being driven. First thing that hits me is that there is some problem with condense or something, but ive tried condenseremover, with no luck. Does someone have any idea what this can be?