Tough to get going. Blows fuse a couple seconds after turning on

Takes multiple ( 15-20) tries to fully Start and build pressure. With tank at 0 psi flip switch to run and it starts turning over slowly then pops the fuse. Wait for fuse to reset and turn on and same thing slowly turns over then blows fuse. This continues over and over till it warms up???? And finally stays on and builds pressure. What do you think it could be? Capacitors??? Head gasket?? Any suggestions would be appreciated. After it gets going it runs and restarts fine