12.14 Fuel Injection

12.14.2 State the advantages/disadvantages of fuel injection versus carburetor systems.

Fuel Injection – Advantages

• More precise fuel metering: Delivers the correct fuel quantity directly, improving efficiency and performance
• Improved fuel economy: Less fuel wastage compared to carburettors
• Better engine performance: More even distribution to cylinders and improved throttle response
• Reduced risk of carburettor icing: No venturi effect, so icing is far less likely
• Improved starting: Particularly in cold conditions
• More even cylinder operation: Reduces rough running and improves smoothness

Fuel Injection – Disadvantages

• Higher cost: More expensive to install and maintain
• Greater complexity: More components and systems involved
• Requires cleaner fuel: More sensitive to contamination and blockages
• Specialist maintenance: Faults can be more difficult to diagnose and repair