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Black exhaust smoke: rich mixture and other causes
Black smoke requires understanding engine type, emissions system and the conditions when it appears.
From observation to understanding
Understand the problem. Know your next step.
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80Guides and answers
الصيانة الدورية
Blue exhaust smoke: burning oil?
Blue smoke may relate to oil entering combustion, but colour alone does not identify the responsible component.
Cooling and air conditioning
White exhaust smoke: when is it dangerous?
Light vapour in cold weather differs from persistent thick white smoke after warm-up.
Cooling and air conditioning
White smoke with a sweet smell: a coolant leak?
Persistent white smoke with an unusual smell and coolant loss increases the need for cooling-system and engine inspection.
الصيانة الدورية
Engine ticking at startup: what does it mean?
Ticking at initial startup must be distinguished from persistent heavy knocking.
المحرك والصيانة
Engine misfires while stationary: possible causes
If the vehicle is stationary, tyre inspection is not the starting point for engine misfiring.
الصيانة الدورية
Oil leak around the valve cover: is the gasket faulty?
Oil near the valve cover identifies an observation location, not necessarily the leak source.
Transmission
Delayed accelerator response: causes of throttle lag
Delayed acceleration may originate in the engine, gear selection or load conditions; it is not a specific fault name.
لمبات التحذير
Electronic throttle delay: check the signal before cleaning
With electronic control, the pedal sends a request to the system; delayed response does not always mean the throttle body needs cleaning.
السلامة والسفر
Hard or soft brake pedal: the difference and its meaning
A hard pedal requires more force; a soft pedal or one sinking further than usual is a different symptom.
الصيانة الدورية
High clutch biting point: what needs checking?
A high clutch biting point differs from a high pedal position.
السلامة والسفر
Vehicle vibrates when braking: pads or discs?
Shaking that appears only during braking differs from constant speed-related vibration.