smokey?

i just bought a car that hasnt been turned on in while, i have turned it on a few times and let the engine run. after like 3 or 4 min runing a little smoke starts coming out from the bottom of the headers. im thinkin that there is a crack in the headers, if there is how serious is the problem and should i not start the car anymore?

umm you have a HEADER. But the smoke could be a number of things.

When you drive the car does it sound ABNORMALLY Loud? Look underneath the car and see that the header meets the cat. If its hanging off then it just needs to be aligned properly and bolted in.

It could also be a coolant leak that starts to BOIL on the exhaust after it gets hot.

What does it smell like? Does the smoke smell like exhaust or burning coolant?

it doesnt sound loud, and it kinda smells like the coolant. what exactly do i need to do to stop this?

you need to find the leak. turn on the car and look for puddles of coolant