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Symptom & Fault Diagnosis

Browse evidence-led Symptom & Fault Diagnosis guidance for UK drivers, including symptoms, safe pre-checks and suitable next steps.

423published guides
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Symptom & Fault Diagnosis

Search by symptom, warning light, service or vehicle. Every guide includes practical context and routes back to relevant professional help where appropriate.

Showing 37–48 of 75 guides in Symptom & Fault Diagnosis Choose a guide to read the full advice.
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Detailed photo of a red automotive brake caliper and disc brake in focus — SSK Mechanics guide to Why Do My Brakes Smell Like They're Burning
Symptom & Fault Diagnosis

Why Do My Brakes Smell Like They’re Burning?

Brakes that smell burning after driving often mean the pads are overheating from contact. Book a Front Brake Pads Replacement with SSK Mechanics today.

Updated 7 Aug 202610 min read
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Car wandering or not tracking straight
Symptom & Fault Diagnosis

Why Does My Car Wander or Not Track Straight?

A car that wanders on the road instead of tracking straight often points to a worn control arm. Book a Control Arm (Wishbone) replacement with SSK Mechanics.

Updated 7 Aug 202610 min read
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Car shaking while idling
Symptom & Fault Diagnosis

Why Does My Car Shake When Idling?

A car that shakes when idling can signal worn engine mounts failing to absorb vibration. Book an Engine Mount Replacement with SSK Mechanics for a smooth idle.

Updated 7 Aug 202610 min read
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Close-up of a mechanic pouring engine oil into a car engine, highlighting maintenance work — SSK Mechanics guide to Oil Leak Under the Car: What Could Be Causing It
Symptom & Fault Diagnosis

Oil Leak Under the Car: What Could Be Causing It?

An oil leak under the car can stem from several worn seals, but a failing sump gasket is common. Book a Sump Oil Pan Gasket Replacement with SSK Mechanics.

Updated 7 Aug 202610 min read
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Spongy or soft brake pedal
Symptom & Fault Diagnosis

Why Does My Brake Pedal Feel Spongy or Soft?

A spongy brake pedal usually means air or moisture has worked into the brake fluid. Book a Brake Fluid Flush & Renewal with SSK Mechanics for a firm pedal.

Updated 7 Aug 202610 min read
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Illustration for: Why Does My Car Pull to One Side While Driving?
Symptom & Fault Diagnosis

Why Does My Car Pull to One Side While Driving?

If your car pulls to one side while driving, a worn wheel bearing is a common cause. Get an instant quote for Wheel Bearing Replacement from SSK Mechanics.

Updated 7 Aug 202610 min read
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Close-up of hands pouring water into a car engine, focusing on auto maintenance — SSK Mechanics guide to Coolant Leak Under the Car: What's the Likely Cause
Symptom & Fault Diagnosis

Coolant Leak Under the Car: What’s the Likely Cause?

A coolant leak under the car is often traced to a failing water pump or perished hose. Book a Water Pump & Thermostat replacement with SSK Mechanics now.

Updated 7 Aug 202610 min read
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Mechanic working under a vehicle, inspecting the undercarriage in a repair garage, ensuring… — SSK Mechanics guide to Why Is My Brake Pedal Sinking to the Floor
Symptom & Fault Diagnosis

Why Is My Brake Pedal Sinking to the Floor?

A brake pedal that sinks to the floor often signals a failing master cylinder losing pressure. Book a Brake Master Cylinder Replacement with SSK Mechanics.

Updated 7 Aug 202610 min read
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Car pulls to one side when braking
Symptom & Fault Diagnosis

Why Does My Car Pull to One Side When Braking?

A car that pulls to one side when braking often means a sticking brake caliper. Book a Brake Caliper Replacement with SSK Mechanics for even stopping power.

Updated 7 Aug 202610 min read
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Low coolant level in reservoir
Symptom & Fault Diagnosis

Losing Coolant With No Visible Leak: Where Is It Going?

Losing coolant with no visible leak can mean it's burning away inside the engine. Book a Cylinder Head Gasket Diagnostic Sniff Test with SSK Mechanics.

Updated 7 Aug 202610 min read
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Illustration for: Why Does My Car Bounce Excessively Over Bumps?
Symptom & Fault Diagnosis

Why Does My Car Bounce Excessively Over Bumps?

A car that bounces over bumps repeatedly usually means the shock absorbers have worn out. Get an instant quote for a Shock Absorber Replacement today.

Updated 7 Aug 202610 min read
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Ethnic males having problem in motor under hood of car on city street — SSK Mechanics guide to Why Does My Car Keep Stalling at Junctions
Symptom & Fault Diagnosis

Why Does My Car Keep Stalling at Junctions?

Stalling at junctions often points to idle control or fuel delivery trouble at low revs. Book a Basic OBD Diagnostic Scan with SSK Mechanics to find the cause.

Updated 7 Aug 202610 min read
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