Turbo boost pressure loss is a frequent problem in diesel Nissan Qashqai models. When the turbo doesn’t deliver enough pressure, performance drops and fuel consumption rises.
Symptoms
- Lack of acceleration power
- Difficulty climbing hills
- Delayed throttle response
- Black smoke from the exhaust
Possible Causes
- Leaks or cracks in turbo hoses
- Dirty or stuck EGR valve
- Malfunctioning turbo pressure sensor
- Clogged air filter
- Mechanical failure of the turbo
Solutions
- Inspect hoses for leaks or damage
- Clean the EGR valve
- Test and replace the turbo pressure sensor
- Replace the air filter during maintenance
- Have the turbo checked by a professional
Preventive Maintenance
- Regular oil and filter changes
- Avoid over-revving and excessive load on the turbo
- Always use quality engine oil
Advice
Driving with low turbo pressure can eventually damage both the turbocharger and the engine.
