Ford Focus RS Mk2 Maintenance Guide
Ford Focus RS Mk2 Maintenance Guide
The Ford Focus RS Mk2, produced between 2009 and 2011, is a high-performance vehicle built around the 2.5-litre turbocharged Duratec engine. While it’s known for its thrilling driving experience, it also requires regular maintenance to ensure longevity and optimal performance. This maintenance guide outlines key service intervals and common areas to check when caring for your Focus RS Mk2, based on Ford’s service schedule and common knowledge within the performance car community.
1. Engine and Oil Changes
The 2.5-litre turbocharged engine is the heart of the Focus RS Mk2, and keeping it running smoothly starts with regular oil changes. According to Ford’s service schedule, the recommended interval for oil changes is 12,500 miles (20,000 km) or 12 months, whichever comes first. It’s important to use the correct oil grade specified by Ford, as high-performance engines like the Duratec turbo rely on the proper lubrication to handle heat and stress.
Be sure to check the oil levels regularly and top up if necessary. Frequent short journeys or spirited driving can lead to quicker oil consumption, so keep an eye on oil quality and ensure it’s changed at the recommended intervals.
Check out the Genuine Ford oil for your Focus RS Mk2 here
2. Air and Fuel Filters
Air and fuel filters are vital for keeping the engine running efficiently. Clogged filters can reduce airflow and affect fuel efficiency, which is crucial for a turbocharged engine.
- Air Filter: Ford recommends changing the air filter every 18,750 miles (30,000 km) or every 2 years. If you notice reduced engine performance or a drop in fuel efficiency, it may be time to check the filter. Additionally, if you live in a particularly dusty area, you may need to replace it more often.
- Fuel Filter: The fuel filter should also be replaced every 37,500 miles (60,000 km) or every 3 years. A clogged fuel filter can cause poor fuel flow to the engine, affecting overall performance. Keep an eye on any signs of hesitation or stuttering during acceleration, which could indicate a problem with the fuel system.
Consider swapping to a performance drop-in filter such as the K&N Performance Replacement Filter
3. Spark Plugs
Replacement of your spark plugs are essential for ensuring the smooth operation of your engine.
- Spark Plugs: The spark plugs should be inspected every 37,500 miles (60,000 km) and replaced if necessary. Worn spark plugs can lead to misfires, poor fuel economy, and sluggish performance. If you notice the engine running roughly or having trouble starting, it may be time to replace the plugs.
It is recommended to stick with the Ford Genuine Spark Plugs for OEM applications - if you are tuned, consider speaking with your tuner to gain their advice on which spark plugs are most compatible with their tune.
4. Brake System Maintenance
The Focus RS Mk2 features large performance brakes with Brembo calipers, designed to handle the car’s high performance. However, due to the stress of spirited driving, brake components may wear more quickly than on a standard vehicle.
- Brake Fluid: Ford recommends replacing the brake fluid every 2 years, regardless of mileage. Brake fluid absorbs moisture over time, which can lead to reduced braking efficiency and corrosion of brake components. Make sure to follow the manufacturer’s recommended fluid type for optimal performance. If you are using the vehicle hard, consider swapping to a more suitable brake fluid such as Motul RBF600 for a better braking feel.
- Brake Pads and Discs: Brake pads should be inspected regularly, and while Ford doesn’t specify an exact interval for pad replacement, they typically need to be changed every 25,000-30,000 miles (40,000-48,000 km), depending on driving style. Discs should also be checked for wear and replaced if they show signs of scoring or reduced thickness.
5. Suspension and Steering
The suspension and steering on the Focus RS Mk2 are key to its handling and performance. The car uses a sportier suspension setup compared to standard Focus models, and it’s important to check components regularly to maintain the car’s sharp handling.
- Shock Absorbers and Springs: The shock absorbers and suspension springs should be inspected every 37,500 miles (60,000 km) or every 3 years. Look for any signs of wear, such as leaking shock absorbers or broken springs. If you experience any unusual handling characteristics, such as bouncing or excessive body roll, it may be time to replace worn suspension components.
- Steering System: The steering system should be checked for any leaks or damage to the steering rack. If you experience difficulty turning the wheel or notice any unusual noises during steering, have the system checked immediately. The steering fluid should be replaced every 37,500 miles (60,000 km) or as specified in the service schedule.
6. Common Boosting Issues and Sensors
The turbocharged engine in the Focus RS Mk2 can sometimes experience boosting issues. These issues are often linked to sensors that monitor engine performance. Three common components to check are:
- MAP (Manifold Absolute Pressure) Sensor: If the MAP sensor is clogged or faulty, it can affect boost levels and engine performance. Check the sensor for any signs of dirt or damage.
- MAF (Mass Air Flow) Sensor: The MAF sensor monitors airflow into the engine, and a faulty sensor can cause poor performance, rough idling, or hesitation under acceleration. Regular cleaning or replacement is recommended.
- Boost Solenoid: The boost solenoid regulates the turbo’s boost pressure. A faulty solenoid can result in inconsistent or low boost levels, affecting engine performance. If you’re experiencing issues with power delivery, have the boost solenoid checked.
7. Transmission and Clutch
The Focus RS Mk2 is fitted with a 6-speed manual transmission, and maintaining the gearbox and clutch is essential for smooth performance. Ford recommends replacing the gearbox oil every 2 years to maintain optimal performance, particularly if the car is used for high-performance driving. If you notice difficulty shifting gears or a slipping clutch, these may be signs that the clutch needs replacing.
8. Regular Inspections
It’s important to have regular inspections to monitor the overall health of the car. Ford recommends having a full vehicle inspection every 12 months or 12,500 miles (20,000 km). This check will assess the overall condition of the car, including:
- Checking for any signs of corrosion or damage to the undercarriage
- Inspecting belts and hoses for wear and tear
- Verifying the condition of the cooling system, including coolant levels and hoses
- Checking the condition of the battery and electrical system
Conclusion
The Ford Focus RS Mk2 is a high-performance car that requires regular maintenance to keep it running smoothly. By adhering to the recommended service schedule and addressing common issues like boosting problems and suspension wear, you can ensure that your RS Mk2 stays in top condition for years to come. Regular maintenance, including oil changes, brake fluid replacement, and sensor checks, is key to preserving the car's performance and reliability.