my 2001 1.8t AWM has had a problem since I bought it less than a year ago where sometimes it takes a few tries to start, and it gets increasingly more difficult to start with less and less fuel in the tank. sometimes it starts first try with a full tank and sometimes it wont start at all unless i put more fuel in. i cant think of many variables, but it might be worth noting that the car gets 91 octane, i tried a fuel system cleaner and replaced the coolant temperature sensor (to pass safety when i bought the car). might also be worth noting that the difficulty starting only comes on cold starts. any advice would be appreciated because every time i try to start the car and it doesn't get there on the first try, i get weird looks. thanks!