I have parked in the same spot twice in the last 2 weeks with Roadkill at work.  My problem ( question ) is this. Can parking a bug on a slope where the backend is down slope cause the car not want to start ? It happened tonight as i tried to start it. It would not get fuel i guess. After i rolled it back to level ground at hit the ignition a couple times it started right up and ran fine. Just curious because when i park in the same spot facing down it starts fine.

I have seen this happen before. Like Rick said ,  depending on  how much fuel is in the tank and the tank  is higher than the carb I have seen the fuel pressure overpower a less than perfect  needle and seat in the carb and flood the engine. If the float level is set to high can cause this also when parking up hill.   All this doesn't happen very often but can.
   Try this . park the same way under the same conditions and before trying to start the engine  ,look at the base of the carb and around the shafts and see if you can see any sign of raw gas leaking or had been leaking down. :?:

Thanks for the info guys. I will check on all your advice ( except for putting the tank on the roof )........ . I may also get a priest to come out and perform an exorsisum just incase the parking spot is haunted or possesed .......... :lol: