smoke from the exhaust

i got a 92 240sx SE. When i was driving my other car, and my friend was driving my 240sx. I saw alots of white smoke coming out. Is there any way i can fix that problem? Should i get a new cat converter, cat-back exhaust??

Anything just help me out!

ummm... if it were bluish tint, then id be worried, cuz that means your car is burning oil. white smoke may be cuz it wasnt warmed up, but i see your from virginia, so i doubt that... never seen white smoke on a warm day

it was completely white smoke, but it smell.

im so confuzed, any other problems withthe car?? cuz i just thought of an idea, which you wont like. cuz im thinkin head gasket maybe. i couldnt tell ya...anyone else???

white smoke is normal at hi rmpz, its most likely carbon build up burning out but heavy white smoke at idle is bad thats antifreeeze burining so its a head gasket leak, next time u start your car go and smell the smoke if is smell like anitfreeze(sweetish smell) that u got a head gasket leak..
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i think it might be the gasket leak. Fixing that, would it be a pain? and how much would it cost to take it to a mechinal place?

yup head gasket fix are a pain in the ass you have to remove the head of the car which involves taking off the intake/exhaust mainfolds.. studs might brake ect.. usually cost about $400-$700 depending on machinic i dont recomend doing this your self pay and get it done right b/c u can seriously mess up your motor
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My bet would be the head gasket. A compression check is the best way to check this. Take it to your mechanic and ask for a compression check, it will be cheaper than the tool to check it yourself; Autozone may perform a check for free. Its not all that hard to change the gasket yourself. I changed the gasket on my MR2 myself and was very successful. The kit from Autozone is about $150 and you'll also need the service manual from either the parts store or your Nissan dealer, a good set of wrenches and sockets, and a torque wrench if you don't think you have the feel to gauge torque by hand.

While you have the head of you should change your timing chain and re-shim your valves too. If you're into modding, now is a good time to debur your manifolds, ports, and combustion surfaces of your head as well as port matching the manifolds to the head. You can have the head milled a bit to raise your compression ratio. You'll gain about 10 hp then if you have the cash JWT sells a sport cam set for a bit over $500 that could give you another 10-15 hp.

I would check the piston to wall gap and check out the bores for grooves.

headgasket? fuck that motor, time to swap