Why won't the car start? on 1993 Audi 90

Car was driving with no apparent problem. Then it just suddenly wouldn't start. The igition, starter and battery seem to be okay. It seems to want to ignite but then just rolls over and over with out starting.

Asked by for the 1993 Audi 90
Check the fuel pressure and make sure you don't have any large vacuum/air leaks. Check the intake boots, hoses and make sure the oil filler cap is installed correctly.