why does the oil light come on when idle only give it a little gas and goes off
Because it builds up pressure when u give it gas jesus
low oil low oil pressure maybe partialy clogged pick up screen
i was going to say maybe your idle is a bit low creating low oil pressure, but your "Nova" is an '86 so its not a real Nova, could be any slew of problems.
Looking for a Used Nova in your area?
CarGurus has 195 nationwide Nova listings and the tools to find you a great deal.
Search Chevrolet Nova Questions
Chevrolet Nova Experts