Probably a 'stupid' question

[XxRomeSDSxX]

im looking to get myself a 2003 350z but the owner said that it blows blue smoke. Now in most cars that usually means that oil got under the piston rings and is burning(correct me if im wrong). Now my question is should i avoid this car all together or miss out on a killer deal? If i do get the car is it more cost effective to bore the cyl's out and swap them with forged pistons ect. or just swap it out for a new motor? I am new to these cars and all advice is welcome. Thanks!

[XxRomeSDSxX]

and if you can give me an idea of what each option would cost thatd help me out a lot as i am on a budget

[Ace2cool]

If you could talk him into compression checking it, that'll give you a good baseline of what's wrong. During the compression check, if it's low, add a capful of oil to the cylinder and see if the number goes up. If it does, the rings are fried. If not, there's another problem. Either way, I'd probably stay clear, as the car was most likely abused.

[BusyBadger]

Either way, I'd probably stay clear, as the car was most likely abused.

^ This.

Except, I'd go with a leak down test over a compression test since you already know there are some issues.