Mondeo 2.2 tdci misfire when cold

White smoke from the exhaust? An overview of possible causes!

The most important things at a glance
  • The exhaust gases from an internal combustion engine consist mainly of nitrogen (N2), Carbon dioxide (CO2) and water vapor (H2O) and are usually colorless.
  • You noticewhite smoke, this indicates that water is being evaporated. This can have different causes.
  • It should be observed whether the problems only occur after a cold start and / or on cold days or whether the problem persists after the engine has warmed up.
  • Especially if there are real clouds of smoke, the engine should be switched off as soon as possible and a breakdown service called or a workshop visited.
  • Moreabout the typical causes and all costs incurred you can find out in the following guide!
  • By the way: If it is more blue or black smoke, I recommend first reading the linked guides.

Evaporating condensation water

If the smoke formation only occurs after the start and / or on cold days, this suggests that the cause is simply evaporating condensation within the exhaust system.

This form of smoke or smoke is unproblematic and disappears after a few kilometers of driving as soon as the exhaust has reached its "operating temperature".

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Cylinder head gasket / cylinder head defective

The cylinder head sits directly on the engine block and closes it off at the top. In addition to the valve control, the cylinder head in gasoline engines contains, for example, the spark plugs and various inlet and outlet ducts.

If the smoke does not disappear after a few kilometers of driving, the problem may be a defective cylinder head gasket or a defective cylinder head.As a result, cooling water enters the combustion chamber and is evaporated. The result is white smoke from the exhaust.

This can lead to restrictions in the cooling or lubrication of the engine, which in the worst case can lead to engine damage. Hence should a workshop should be visited as soon as possible at the first suspicion.

You can find more information on repairs in this guide!

Material / serviceChange cylinder head gasketChange cylinder head
material costs150 to 450 euros600 to 1,500 euros
Labor costs (fictitious
Hourly rate: 80, - Euro)
240 to 640 euros240 to 640 euros
New engine oil including oil filter35 to 130 euros35 to 130 euros
cooling water25 to 50 euros25 to 50 euros
All prices are rough guide values ​​including VAT and can of course vary.

TIP: Do not drive to a workshop before you have determined the current value of your vehicle. So you always know in advance exactly the cost up to which a repair is still worthwhile!

Simply use the following form from wirkaufendeinauto.de (100% free and non-binding).

turbocharger defect

The so-called exhaust gas turbocharger - turbo for short - is installed in diesel and gasoline engines (= petrol). The aim is to increase the performance and efficiency of the combustion engine through a higher air supply.

Lubrication with engine oil is used to prevent bearing damage due to the extremely high speed in the turbocharger (up to 30,000 rpm!).

A A defect in the turbocharger can ensure that this oil gets into the turbocharger, where it is compressed and burned becomes.

Depending on the exact form, this often leads to thick white billows of smoke, which smell strongly of oil. In addition, the car then only accelerates very poorly. In order to avoid expensive consequential damage, a workshop should be visited as soon as possible.

You can find more information on typical causes and symptoms of turbocharger damage in this separate guide.

Material / serviceestimated prices (new part)
Turbocharger material costs850 to 2,300 euros
Workload 240 to 640 euros
Engine oil + oil filter35 to 130 euros
Prices are rough guide values ​​including VAT and may vary!
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Last updated on May 18, 2021 at 2:53 am. We point out that the prices displayed here may have changed in the meantime. All statements without guarantee.

General inspection despite white exhaust smoke?

Depending on the exact cause of the problem, it may be that the exhaust gas values ​​are increased and therefore there is a significant deficiency. Then the main inspection is not passed and the deficiencies must first be eliminated.

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Still unanswered questions?

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Categories exhaust system, general, problem diagnosis, advice