whats causes a 1987 98 regency oldsmobile not to fire
it has a new coil
If it's turning over and not firing then I would say that your fuel pump has failed. You should have plenty of spark with a new coil, so the only other thing would be no fuel.
Looking for a Used Ninety-Eight in your area?
CarGurus has 49 nationwide Ninety-Eight listings and the tools to find you a great deal.
Search Oldsmobile Ninety-Eight Questions
Oldsmobile Ninety-Eight Experts