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I HAVE HAD THE HEAD GASKET AND THE DRIVERS SIDE CYLINDER HEAD CHANGED ON MY AUDI Q7 3LTR BUT STILL GETTING HEAVY SMOKE THROUGH THE EXHAUST

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  • Audi Master
  • 1,013 Answers

Have you checked that the other side of the engine block isn't cracked? Have you pressure tested each cylinder to see where oil might be blowing by? Could be your cylinder rings are worn or there is a crack in your block elsewhere.

Posted on Jul 30, 2013

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6ya6ya
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Posted on Jan 02, 2017

autodr
  • 260 Answers

SOURCE: EXHAUST LEAK INTO COOLING SYSTEM?

i assume its a 4 cyl?? will this car ever overheat if just sitting idle? when it begins to overheat, hows the heat in the cab? sounds like maybe the radiator is partially clogged or restricted somehow. i would change the radiator cap and make sure the overflow is set to proper level. (incl. radiator level) i wouldnt jump to headgasket just yet, they are pretty durable from what ive seen

Posted on Dec 16, 2008

  • 6982 Answers

SOURCE: white smoke or steam coming out of exhaust pipe,

Its funny that everyone has solved the problem without any answers to critical questions. In this case, everyone is right and everyone is wrong. ONLY careful testing and observation will determine if there is an actual problem. I do not solve problems just to be first. Even in a hands-on situation I refuse to jump to conclusions before testing, otherwise you run the risk of at best, "chasing your tail" or at worst, tearing into a perfectly good engine to prove nothing!!!
Happy New Year!!!!

Posted on Jan 01, 2009

  • 3600 Answers

SOURCE: av got audi a4 petrol it white smoke wen starts

you have a head gasket on wrong or a warped head or warped block,

Posted on Jun 25, 2009

sawdust46694
  • 398 Answers

SOURCE: '96 Cadillac w/smoking exhaust & overheating

you will get a white kinda smoak its like steam. check the thermostat and make sure its not stuck closed.

Posted on Jul 11, 2009

  • 905 Answers

SOURCE: 2000 camry. blown head gasket (daughter drove car

Yes, you can, but not exactly recommended. If you are going to go that deep into it, then might as well do everything else. However, being unemployed tends to have a negative impact on the wallet....

I suspect it is more than just rings. I think that the walls have been scored badly as well. You may be able to use a borescope to take a peak into the cylinder through spark plug hole. Move the piston to bottom of stroke, and see what you can see. If scarred, much work will be needed. If hatches look alright, then you might be able to get away with just rings.

What kind of compression are you getting on #1 vs #2? This also might be a blown headgasket into an oil passage, or the head (perhaps block?) is ever so slightly warped in this area.

Posted on Aug 29, 2009

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white smoke from the exhaust and overheating would almost certainly mean a blown head gasket.
the head gasket has gone between a cylinder and a cooling channel so exhaust gasses can get in to the cooling system resulting in the boiling and water from the cooling system is getting into the cylinder resulting in the white smoke (actually steam) from the exhaust.
the exhaust manifold is a separate issue that can be replaced when the head gasket is repaired.

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Your Intake gasket, head gasket, or the head itself is leaking internally. This can cause serious damage & siezing of the pistons in the cylinders if operated with this condition. A pressure test will be necessary to determine exactly where the leak is coming from. You can pull the plugs and identify which cylinder is pulling the fluid in & blowing it out the exhaust as you will see the antifreeze residue on the plug when removed.

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Dense white smoke usually means coolant is getting into the cylinders -- usually a head gasket. You're fortunate if you have dual exhausts and are only getting the white smoke from driver's side. You know which head gasket to check/change. Unless the leak is minor, you can usually determine which cylinders are affected by doing a compression check.

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Coolant leak/head gasket


If you have a head gasket leaking, and your engine is blowing a white smoke from the exhaust pipe, then you're taking coolant/water into your piston/s.

After a heavy acceleration your pressure is forcing more coolant/water into your cylinders..but don't be fooled..water/coolant is also getting into your cylinder/s when you're driving slow too.

You should get the head gasket repaired as soon as you can, or the head gasket may very well let loose and then you get to deal with having the heads shaved if they warp from the heat.

Either way..you really should get the gasket replaced soon.

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