2004 Pontiac Grande prix won't start? Always had problems starting had too give it about three tries and some gas but would always work broke down while driving started once after but since nothing..

sounds like you have a blown head gasket check for water in the oil this is a good sign for a blown head gasket. The white smoke out of exhaust is a sign you have water in your oil

After the fuel pump was put in the mechanic said car started and ran then when I came too pick it up it would not start would it still be a gasket?

Like answer 1, sounds like a blown head gasket.

Sounds like a horribly neglected car that should probably be scrapped at this point.

Just got the car from an auction

Sometimes it is best to cut your losses and try again, or you could get a Jasper engine.