are cracked heads common on the 02 turbos? i know on the regular 996 engines that was a common issue or the issue with porous engines that cause the mix of oil and coolant but i always thought the turbos had different engines... blue smoke out of the tailpipes? could it possibly the aos? thanks guys...

 

i havent heard of any cracked heads i have heard of 1 porous head thats it though.

blue smoke when? on start up?

 

smoke upon start up is normal with these things.

and no i have never heard of any issues concerning cracked heads on any yr turbos.

 

Startup smoke can be minimized if you let your car idle for a minute or two before you shut it off.

 

Since I switched from M1 5w50 to M1 5w40 Turbo Diesel Truck I haven't seen the slightest puff of smoke at start up. I used to get a decent cloud...

my $0.02...

 

It's funny when you start up your tt and friends got close and say"hey man your car is having problem,it's smoking"

 

Mine has only done it twice in the two years I have had it. Knock on wood!

 

That's why I was planning to fix a timer to switch off the car
But didn't find the support from members

 

If you want a timer switch, you can just buy one for around $100. Apexi/Greddy/HKS/Innovate - very easy install and very easy to set for manual delay after key off.

 

what's a the timer switch?

 

I just let my car idle for 3-5 min depending how hard I was driving her. Is that the same thing?

 

A turbo timer connects to the ignition and O2 sensor and it determines from the way you have been driving (O2) how long the engine should idle before it is shut off. Sometimes, there is no idle time at all and sometimes it could be a couple of minutes - it just depends on how much you have been pushing the car. You can also manually set idle time if you want.

You could just sit in the car if you want - but this way it is all automatic and you don't have to wait around.

 

Yes. 5 minutes is a bit overkill though.

 

I let my car idle for a minute before shutting down if i've run it hard not long before shutting down. I don't think this is all that big of an issue though for cars with stock turbos. I think it is more critical for cars fitted with ball bearing turbos.

I get a tiny puff of smoke at initial start up sometimes and other times none at all. Toally normal for them to do this at startup. If smoke comes at other times, then their could be some issues.

 

smoke on start in most cases are light overfilled oil...especially on 996 turbo engines...