Common Issues
Fuel System Problems
Carbureted models can experience issues with starting and rough idling, especially in cold weather or after the vehicle has been sitting for extended periods. Dual-fuel systems may develop leaks or conversion efficiency issues over time.
Solution:
Regular maintenance of the fuel system, including cleaning of the carburetor jets and adjusting the mixture. For dual-fuel systems, ensure regular servicing by a qualified LPG technician and check for any leaks or worn components.
Overheating
The 4.2L engine can be prone to overheating, especially in hot climates or when under heavy load (such as towing or off-road driving). This can be due to radiator issues, water pump failure, or thermostat problems.
Solution:
Maintain the cooling system with regular coolant changes, check for leaks, and consider upgrading to a larger capacity radiator if doing heavy work. A good quality thermostat and functioning viscous fan clutch are essential.
Rust and Corrosion
The Maverick/Patrol of this era can develop rust in several key areas, including wheel arches, door bottoms, chassis rails, and bodywork seams. This is particularly common in vehicles that have been used in coastal areas or on salted roads.
Solution:
Regular undercarriage washing, application of rust preventative treatments, and immediate attention to any paint chips or rust spots. Consider chassis and cavity wax treatments for long-term protection.
Suspension Wear
Bushings, ball joints, and shock absorbers can wear, leading to clunks, rattles, and poor handling both on and off-road. The leaf springs can sag over time, affecting both ride height and comfort.
Solution:
Regular inspection of suspension components and replacement of worn parts. Polyurethane bushings can offer improved durability over OEM rubber parts. Consider upgraded shock absorbers and replacement leaf springs if necessary.
Maintenance Schedule
Engine Oil & Filter Change
Interval: Every 5,000 km or 3 months
Use high-quality 15W-40 or 20W-50 oil for the 4.2L petrol engine. Capacity is approximately 6.5 liters.
Transmission Oil Change
Interval: Every 40,000 km or 2 years
Manual transmission uses API GL-4 75W-90 gear oil. Capacity is approximately 2.5 liters.
Transfer Case Oil Change
Interval: Every 40,000 km or 2 years
Use API GL-4 or GL-5 80W-90 gear oil. Capacity is approximately 2.2 liters.
Differential Oil Change
Interval: Every 40,000 km or 2 years
Use API GL-5 80W-90 gear oil. Capacity is approximately 2.8 liters (rear) and 2.0 liters (front).
Cooling System Service
Interval: Every 60,000 km or 3 years
Drain, flush, and refill with quality ethylene glycol coolant. Capacity is approximately 14 liters.
Air Filter Replacement
Interval: Every 15,000 km or as needed
Replace more frequently in dusty conditions. Consider a washable filter for off-road use.
Spark Plug Replacement
Interval: Every 20,000 km
Use NGK BP6ES or equivalent. Gap to 0.8-0.9mm.
LPG System Inspection
Interval: Every 10,000 km or annually
Check for leaks, proper conversion, and service by a qualified LPG technician.