Cloud of white exhaust smoke under heavy acceleration

drummerdimitri

drummerdimitri

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I've recently taken my car to the dealer for servicing and they changed the coolant tank as it was "leaking".

A couple of days ago I got terrible acceleration hesitation upon kickdown and got an EPC light and the car went into some kind of limp mode. The problem went away the next day.

Today, I realized for the first time under maximum acceleration that a cloud of white smoke was exiting my exhaust so now I'm thinking I have a blown head gasket as that is the only reasonable explanation as it is burning coolant so that tank was never leaking in the first place, it was just being combusted along with the air/fuel mixture.

What do you guys think? Will be calling the dealer tomorrow to have it checked out.
 
Have you had a look in to see if coolant is in the head?
 
Hey sorry to hear of the issue you’re having, is it thin white smoke, like vapor or really thick?

If it’s excessive white smoke, then yes you’re prob right. Would say coolant is leaking into the engine combustion chambers.

To be sure, some wee things other than white thick smoke on acceleration you can check for are; fouling on spark plugs, white milky oil, further low coolant after dealer fix, bubbles in your expansion tank..



APR Stage 2+
 
In case it's a blown gasket, would it be covered under warranty or is this considered to be a wear and tear item?
 
is it a tfsi engine? as mine has always been a bit smoky.Found out its just CO2 as the tfsi engine does naturally steam quiet a bit .my local specialist confirmed this post inspection.As a previous post says the give away is the oil filler cap and expansion tank coolant loss.
 
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Yes, the head gasket will be covered under the warranty as it should last the life of the car. That said, HGs don't just blow there is something else wrong which has caused it to happen (again the cause should be covered under the warranty).
This is all assuming your car has not been modified in any way.
 
So the dealer called said it turned out to be clogged fuel injectors so they removed them, cleaned them and re-installed them.

They want 450$ for this job is that not too much? New injectors cost that much.

Apparently it's because of dirty fuel. How come we have other cars with the same mileage and never got the same issue?
 
drummerdimitri said:
So the dealer called said it turned out to be clogged fuel injectors so they removed them, cleaned them and re-installed them.

They want 450$ for this job is that not too much? New injectors cost that much.

Apparently it's because of dirty fuel. How come we have other cars with the same mileage and never got the same issue?
Click to expand...

Surely there’s a fuel filter there to stop dirty fuel otherwise it’s a design fault.
 
AlS3BE said:
Surely there’s a fuel filter there to stop dirty fuel otherwise it’s a design fault.
Click to expand...

There is one apparently they told me it has nothing to do with that. So much for clarification.
 
drummerdimitri said:
There is one apparently they told me it has nothing to do with that. So much for clarification.
Click to expand...

Fuel filter is to filter out muck from getting to the injectors. Modern injectors are very fine to control emissions and economy and the smallest particles can clog them up. So what is the point in the fuel filter if it can’t do that basic task?
My argument will still be it’s a design fault if there isn’t a fuel filter to do that basic job. My 20 year car has a basic fuel filter in the fuel line and I never had that problem with clogged injectors.
I wouldn’t let the dealership mechanics take you for a ride mate. I would argue till I’m blue in the face :wink: especially at $450, I’m assuming usd, last time I looked over here it was around £40-50 to get an ultrasonic clean and new seals on injectors. So £200 for 4.
 
A petrol station may have had an underground contaminated tank. Did the garage check the petrol in your tank?
 
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So after my local Audi service center cleaned the fuel injectors, the issue persists.

Last week my discharge pipe popped off and there were large amounts of oil in there. My tuner told me it could be a tired turbocharger. Could this be the case? My car only has 45000 Km on the odometer. Sure harsh driving and 400 Hp is a lot of strain on it but still that seems too young a life for a replacement.
 
drummerdimitri said:
So after my local Audi service center cleaned the fuel injectors, the issue persists.

Last week my discharge pipe popped off and there were large amounts of oil in there. My tuner told me it could be a tired turbocharger. Could this be the case? My car only has 45000 Km on the odometer. Sure harsh driving and 400 Hp is a lot of strain on it but still that seems too young a life for a replacement.
Click to expand...

If this is covered by warranty, why are you being asked to pay for anything at all?

If it’s showing obvious symptoms like smoking, take it to Audi and leave it there.
 
Still got the S3 drummerdemitri? If so, according to your other posts it was purchased in 2015, so unlikely to be under a warranty any longer. You also live in Lebanon so maybe the same warranty conditions may not apply?
If it is the same S3 you may wish to provide more information, such as all the mods you've been mucking about with if they apply to the same vehicle...
 
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