smokeing with take off..

[VeloceDrift]

So if im sitting at idle for to long like at a red light when i take of my car starts puffing some white smoke that smells like burnt oil. It never smokes any other time. not when boosting or driving or even at idle just when i take off from idle. I have a 93 with a 95 motor, t25, safc, z32 maf (did it before i put that in as well)

thanks for the help

[KA720]

sounds like you need new valve seals

[C-Kwik]

sounds like you need new valve seals

While the symptoms might suggest that and it is certainly a possibility, I'd put my money on the turbo's seals.

[nelson8708]

my car did the same thing when i switched from syn. blend oil to full syn. Once i switched back to syn. blend it went away. You might want to try bumping up in what oil weight you run (10w30 to 10w40). If you are already running 10w40 i dont know if going up to 20w50 would be a good idea unless you live in a very hot enviroment.

[DevilMB3017]

Is your oil drain line as straight as it can be coming off the turbo and back into the pan? If it builds up in the line it can cause smoking.

[C-Kwik]

Is your oil drain line as straight as it can be coming off the turbo and back into the pan? If it builds up in the line it can cause smoking.

Doubt that is the case here. If oil was backing up in teh drainline, it would likely be seen heavily at higher RPM's where oil pressure and flow become much higher.

He's likely got oil being drawn under vacuum or low pressure and pooling. Once the airflow increases, it picks up the oil and burns it (in the engine or the exhaust) causing the puff of smoke when taking off after idling for a short time.

[GEO]

No, its def your valve seals. If it was backup or anything of that sort, you would be smoking at idle as well...

[VeloceDrift]

Hey sorry havnt been on inn a few days. anyway.. for one i am running a thicker oil because it will be getting a bit hot here in a month or so, also my drain line is not perfectly straight but not to bad, if the valve seals are bad is that a really bad thing?? I plan on a rebuild sometime in the future but not right now. Deffanitly seems to do it when its warmer outside. ie: at night it doesnt do it at all.. another question. On my SAFC if i monitor the Knock sensor it seams to read between 2 and 10 when my car gets hotter at the same time as it smokes. Not sure if this is from the same thing but thought i would through it in their. Also what does the knock reading even mean?? not a noob with the KAT but still not sure how to read the knock reading. Thanks for all the sugestions i will try a different oil just to see.

[C-Kwik]

No, its def your valve seals. If it was backup or anything of that sort, you would be smoking at idle as well...

A failing turbo seal, especially early on, can have very similar symptoms. Keep in mind, I had the very same problem in my KA-T and I thought it was the valve stem seals as well. After spending a day replacing the damned seals, it didn't solve the problem. It isn't expensive to replace, but does require a compressor with a spark plug hole attachement (you can use one from a compression tester or leakdown tester) and a special type of valve spring compressor (I had to modify the one I got to work on the KA though). Its a royal PITA to replace the seals. Not to mention if you mess up and allow a cylinder to decompress during the process, you can drop a valve into the cylinder. The valve stem seals on the KA are pretty robust and an unlikely point of failure. I'd try and be sure before going down that road.

[elpiar]

Believe it or not I am about to post exactly the same thing.

I've been having this problem. Although mine smells a little more like foul smell instead of burnt oil or gasoline (like running rich). I don't think it's coolant. I don't know how to describe the smell. Maybe like those car running without a cat? Mine has a cat converter though.

So, any other suggestions? My valve seals are still fresh, I had the head rebuilt 10k miles ago. Turbo seals? anything? This only happens after idling for some time, never happens any other time.

[elpiar]

any other thoughts?

[C-Kwik]

any other thoughts?

The possible causes are allready listed in this thread. There isn't much else we can provide without further info about what you are finding. Poke around in your engine compartment. Look for signs of an oil leak. If you are getting a puff of smoke when taking off after idling, let the motor idle at operating temperature, then kill hte motor and start looking for a pool of oil somewhere. The location you find this pool of oil will likely tell you what needs replacing. You're going to have to do some work to figure this out. No way around that...

[turbo2nr]

i have the same problem.. ive learned to accept it..

sigh...

[ppctx]

I had the same problem once. Keep on running it till my car billowed smoke, even at idle. valve seals are cheap and aint to hard to replace.