Sudden loss of power: the most common causes

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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The car has no pull any more: causes of sudden loss of power on diesel and petrol (turbo, DPF, injection, sensors) and MasterTuning diagnosis.

Blue smoke from the exhaust: the engine is burning oil

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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Blue smoke from the exhaust: it means oil in the combustion chamber. Causes (valve guides, piston rings, turbo) and how to gauge the severity. MasterTuning.

Black smoke from the exhaust: causes on diesel and petrol

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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Black smoke from the exhaust: mixture too rich. Causes (injectors, MAF, turbo, EGR) and practical solutions. MasterTuning diagnosis throughout Italy.

White smoke from the exhaust: causes and when to worry

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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White smoke from the exhaust: the difference between harmless vapour and burnt coolant. Causes, associated symptoms and MasterTuning diagnosis.

DPF regeneration in progress: what to do and what not to do

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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DPF/FAP regeneration in progress: how to recognise it, how long it takes, why it must not be interrupted and what happens if you switch off the engine. MasterTuning.

Yellow and red car warning lights: which ones mean you must stop

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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Yellow or red light? Guide to car warning light colours: which ones let you carry on and which require an immediate stop. MasterTuning.

Fuel reserve light: how many km are really left?

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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Reserve light on: how many kilometres are left, why you should not run dry and what the diesel pump risks. MasterTuning.

Seat belt warning light always on: causes and fixes

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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Seat belt light on even with the belt fastened: causes (buckle, seat sensor, wiring) and how to fix it without disabling safety.

Power steering warning light on and heavy steering: causes and solutions

22 August 2026
Guides and Diagnostics
Posted by MasterTuning
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Power steering (EPS) light on and stiff steering: electrical and hydraulic causes, what to do and how it is reset. MasterTuning diagnosis.

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