When my 1999 Boxster is parked short term i.e. 1 hour or less, it won't start.

What is your question?

When my 1999 Boxster is parked short term i.e. 1 hour or less, it will crank but will not start. When the car is parked for 2-3 hours, the car fires up immediately. Also, when the car is parked overnight, there are no issues starting the car. The car performs great otherwise. What is causing this starting failure after being parked short-term?

What makes this problem better or worse?

Car will not start when parked short term, about 1 hour or less. It cranks but wont start. When starting the car after 2-3 hours parked, it starts up immediately. No problem starting the car when parked overnignt.

How long has your 1999 Porsche Boxster had this problem?

4 weeks