problems

97 camaro. it has new engine. codes come up on secondary air injection. i saw random hose coming from smog pump, wher does it go? and oxygen sensors code came up. it cranks a few times, let up on starter, and it will crank and fire up, wat is goin on. purge canister switch? is ther fuses for any of these? i have checked but not sur, need help, i appreciate it.