Car starts on 4th to 5th try like maybe fuel
Check fuel system, filter, injectors, and fuel pump.
Do u know the psi it should have
It could also be a faulty crank sensor. Link to fuel PSI levels: http://www.justanswer.com/buick/5wkrg-1995-buick-riviera-supercharged-fuel-pressure-goes.html
Looking for a Used Riviera in your area?
CarGurus has 118 nationwide Riviera listings and the tools to find you a great deal.
Search Buick Riviera Questions
Buick Riviera Experts