Introduction
This article provides troubleshooting steps for addressing significantly decreased fuel economy in a Toyota Prado 90 series equipped with the 1KZ-TE engine. The information is geared towards owners experiencing a sudden and substantial increase in fuel consumption.
Problem
A 1KZ-TE powered Prado is experiencing a drop in fuel economy from approximately 12L/100km to 18L/100km. The vehicle has had the injector pump reconditioned and injectors serviced around 30,000km ago. The engine is slightly hard to start, but otherwise performs well with good turbo boost and pulling power.
Possible Causes and Solutions
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Specialist Inspection: Given the previous work on the fuel system, a specialist mechanic should inspect the vehicle.
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Maintenance: Regular vehicle maintenance is important. Example:
- Timing Belt replacement.
- Water pump replacement.
- Radiator flush and coolant replacement.
- Regular oil and filter changes and drivetrain lubrication.
Relevant Parts
- Glow plugs.
- Timing belt.
- Water pump.
- Alternator.
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