Ok, so I've spent about the last 20 minutes searching around for "white smoke" and most of the answers are similar, but I'm posting this just to make sure I'm reading correctly.

I've got a 93 EX with a stock Z6 in it, and just today I started noticing a bunch of white smog coming out of the exhaust when I accelerate. Little amounts come out when not moving or accelerating, but it's a pretty decent amount when I start going.

What are the most common causes of this?

 

Chances are that your head gasket is blown. White smoke means you are leaking either water or anti-freeze into your motor. Smell your exhaust. If it has a "sweet" kind of smell to it, its anti-freeze and you must replace gasket.

 

If it is indeed the head gasket (which is the most common answer I found), is that terribly hard to replace on a Z6? I've never done one before and if I could do it myself, I'd rather go that route than spend hundreds of dollars at a mechanic/dealer.

 

Head gaskets are not hard to do. You could do it by yourself in a days time from start to finish. Just grab a helms or haynes manual and go step by step. You could even get on here for re-assurance and find a DIY to help you along with pictorials. Give it a try man, chances are you'll be able to do it if you can read and comprehend directions.

 

It will be as hard as you make it really. If you are handy with a wrench and can read, it shouldnt be too hard, pending you have all the right tools for the job (big factor). Your essentially lifting the head, removing gasket, putting on new one, bolt back together. Of course any prep or precautions, but pretty straight forward. You must remove things like the timing belt which requires you to be able to reset the timing correctly. Again if you have the right tools and know a thing or two its not too bad.

If you think about it and have second thoughts on being able to do it....DONT DO IT...spend $350-$400 to get it done, instead of over $1000 for a replacement motor when it falls apart.

 

X2, it's like taking drugs. If you doubt it, then dont do it.

 

to OP: Does it smoke only during heavy acceleration? Like when you're flooring it? or just regular commute status?

 

hahahah...never works for me

 

It trickles out when idle and doesn't smoke a lot, but when I accelerate normally for regular commute, and when I get on it it puffs up quite a bit. It's a lot more than what I've seen before.

 

sounds like the headgasket its fairly easy to change it out......and also use some gasket bond also but otherwise its really easy if you are mechanicaly enabled if not then just take it somewhere to get done dont be like the other guy when he took it to get done somewhere and they left a nut in the combustion chamber lol

 

Must be the headgasket