A smoke test revealed an inlet manifold air leak on this Range Rover Sport. Learn the symptoms, why smoke testing matters, and how 1Stop Motor Shop in Newtownabbey diagnosed it.
This Range Rover Sport came into our Newtownabbey workshop with running issues. To accurately diagnose the fault, we carried out a smoke test, which confirmed a leak at the inlet manifold. Unmetered air entering the engine was causing incorrect readings and poor performance.
The inlet (intake) manifold controls how air is delivered into the engine.
Distributes air evenly to each cylinder
Works with sensors to balance fuel and air
Helps maintain smooth idle and engine performance
If air leaks into the system, the engine can no longer manage fuel correctly.
A smoke test is one of the most reliable ways to find hidden air leaks that are difficult to see.
Smoke is introduced into the intake system
Any leaks allow smoke to escape
Even small cracks or seal failures become visible
This avoids guesswork and prevents unnecessary parts being replaced.
The smoke test clearly showed smoke escaping from the inlet manifold area.
Inlet manifold air leak
Unmetered air entering the engine
Incorrect air-fuel mixture
Likely cause of poor running and warning lights
Left unresolved, this can lead to further engine issues.
If you’re driving around Newtownabbey, Glengormley, Mallusk or Jordanstown, common signs include:
Rough idle or stalling
Loss of power
Engine management light
Increased fuel consumption
Hissing or whistling noise from engine bay
A proper smoke test is the fastest way to confirm the fault.
Once the leak location is confirmed, repairs are carried out correctly and safely.
Confirm leak using smoke test
Inspect inlet manifold and seals
Replace damaged seals or manifold if required
Clear fault codes
Test drive and recheck system
The goal is to restore correct air-fuel balance and engine performance.
Modern vehicles like Range Rover rely heavily on accurate diagnostics.
Advanced diagnostic and smoke testing equipment
Experience with Range Rover and complex engines
No guesswork — evidence-based repairs
Clear, jargon-free explanations
Trusted Newtownabbey garage
Air leaks can start small but quickly lead to running issues, warning lights, and higher repair costs.
Call / WhatsApp: 07951 728365
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Email: OneStopMotorShop@hotmail.com
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Based in Newtownabbey, serving:
Mallusk, Glengormley, Jordanstown, Whiteabbey, Carnmoney, Mossley, Monkstown & Ballyrobert.
