Evo 3: excessive exhaust smoke on cold start

[pac_jb]

Hi guy,

When I cold start my car in the morning, there will be some greyish smoke from my exhaust and stops after 5 minutes and today I started the car after one week , the smoke was even more but gone after 5-6 minutes, can normal condensation , or could it my turbo leaking or valve seal leaking btw I did top overhaul last year

 

[Izso]

What car?

Edit : Just saw Evo 3.. sorry. Didn't see clearly

What does the smoke smell like? Oily? Petrol-ish?

If you did a top overhaul, your valve seals shouldn't be leaking. If they are then your mechanic was a hack. Turbo leaking need to visually inspect

 

[pac_jb]

Perdana with Evo 3 engine, the smoke smells like oily

 

[pac_jb]

My exhaust is straight 3 inch from front to back, if the exhaust is bigger , will the smoke on cold start would be more, it was raining anyway when I started the car just now

 

[sweelt]

confirm not vapor ?

 

[pac_jb]

That's y bro a bit confused

 

[sweelt]

If vapor is ok. Mean engine is good. Use palm feel the smoke.

 

[vr2turbo]

Only in the morning then is vapor. If oil seal leak, then after a long stop when start will have smoke, means whether start in afternoon or evening. If turbine leak, normally won't stop and you get white smoke

 

[y2188]

can try use tissue paper to cover the exhaust when there is smoke, if there is black stain then oil d/wet then its condensation

 

[pac_jb]

OK bro will try that

 

[grungger.gsr]

maybe ur car running rich...

 

[kurt_629]

My exhaust is straight 3 inch from front to back, if the exhaust is bigger , will the smoke on cold start would be more, it was raining anyway when I started the car just now

actually quite normal..

I also running 3" and 5" out, but I don't have much smoke.

was told its normal for evo engine.
black smoke = normal
white = time for overhaul..

 

[vr2turbo]

actually quite normal..

I also running 3" and 5" out, but I don't have much smoke.

was told its normal for evo engine.
black smoke = normal
white = time for overhaul..

Black is probably soot, running rich.....

 

[alcyon]

My take on this is, if you see the smoke on startup, don't wash your car for a month. After that one month look at the area near the tailpipe. Is there black oil marks ? If no, then you arent burning oil, just condensation in the exhaust. I actually park my car's back facing towards a painted white wall, and every morning when i start, after the engine settles down from warming up, there is white "smoke" coming out and going against that white wall. Happening for 8 months already since i changed to S flow muffler. But ...the wall is not turning black and neither is my bumper, plus the oil level isnt dropping so i know I have nothing to worry about.