My AFG furnace will not turn on unless I push the restart button. The Furnace then turns off in about 30 seconds. What might be the problem?

Is this a oil furnace

Yes this is an oil furnace

Did you run out of oil?
When was the last time you have your furnace professionally tuned?

I still Have oil. My dad said it could be the spray nozzle, but wasn't sure.

It could be the nozzel but it also could need a professional tune up.

What does a tuneup range in cost

Really depends upon what the labor rates are in your area. Call for a estimate. Many times your oil supplier will offer a special price to there customers.

Thank you