The Mitsubishi Aspire/Galant GDi offered New Zealand drivers a fuel-efficient option in the late 1990s and early 2000s within the mid-size sedan category. These models, equipped with the Gasoline Direct Injection (GDi) engine, present specific maintenance considerations to keep them running smoothly.
Owners of the Mitsubishi Aspire/Galant GDi should be aware of the following potential issues:
• GDi High-Pressure Fuel Pump Failure: This is a common issue, potentially occurring around 120,000-180,000 km.
• Carbon Buildup in Intake Manifold: Due to the GDi engine's design, carbon can accumulate in the intake manifold, potentially requiring cleaning to maintain optimal performance. This can also start to be a factor around 120,000-180,000 km.
When taking your Mitsubishi Aspire/Galant GDi for a Warrant of Fitness (WoF) inspection, pay close attention to:
• Rear Trailing Arm Bushes: Excessive play in the rear trailing arm bushes is a common WoF failure point.
• GDi Fuel System Leaks: Ensure the fuel system has no leaks, particularly around the high-pressure fuel pump and fuel lines.
Ownership Insights
Owning a GDi Galant/Aspire in New Zealand requires some awareness of its unique characteristics. The GDi engine was known for its fuel efficiency, but also has its own set of potential issues.
Essential Components
Maintaining your Aspire/Galant GDi often involves paying attention to several key areas. These include:
• Front Upper Ball Joints: Regularly inspect these for wear, as they are crucial for steering and suspension.
• Exhaust System: Monitor the exhaust for leaks or damage, which can affect performance and emissions.
• Piston Rings: Healthy piston rings are essential for proper engine compression and oil control.
• Cylinder Head Bolts: Ensure these are properly torqued to maintain a secure head gasket seal.
• Timing Belt Idler: Regular replacement of the timing belt idler is critical to prevent timing belt failure.
• Camshaft Angle Sensor: A faulty sensor can cause engine performance issues; diagnose and replace as needed.
• Control Arm: Inspect control arms for damage or worn bushings, which affect handling and alignment.
• Alternator Drive Belt: Keep this belt in good condition to ensure proper charging system operation.
• Oil Filter: Regular oil and filter changes are vital for engine health.
• Radiator Hose: Inspect hoses for cracks or leaks to prevent overheating.
• Gasket Sets (Full & Conversion): Use quality gasket sets when performing engine overhauls or rebuilds.
• Oil Seal Kit (Timing): Replace seals during timing belt service to prevent oil leaks.
• Rear Brake Shoe Fitting Kit: Use a kit when replacing rear brake shoes to ensure proper installation.
• Clutch Pressure Plate: A worn clutch pressure plate can cause slippage; consider replacement during clutch service.
GDi Engine Considerations
The GDi engine requires specific attention:
• Carbon Buildup: GDi engines are prone to carbon buildup in the intake manifold. Regular intake cleaning can help mitigate this issue.
• High-Pressure Fuel Pump: Be aware that the high-pressure fuel pump is a known weak point, and its failure can cause significant performance problems. Listen for unusual noises from the pump and address any issues promptly.
DIY Friendliness
The Mitsubishi Aspire/Galant GDi offers a moderate level of DIY friendliness. Some tasks, especially those related to the GDi fuel system, might require specialized tools or knowledge. Always consult a service manual and take appropriate safety precautions.