Fuel System Repair in Vantaa

When the fuel system needs servicing

Fuel system faults usually show up in how the engine behaves. Typical symptoms include: difficulty starting (especially when cold), rough idling, lack of power under acceleration, the engine warning light coming on and rising fuel consumption figures. Sometimes the car will stall at idle and be hard to restart. One faulty component affects the whole system. A weak fuel pump leads to low supply pressure, which shows as lack of power under load. Faulty injectors atomise fuel incorrectly or leak when sitting — the consequences are black smoke, rising consumption and, in the worst case, cylinder hydrolock causing mechanical damage. Diesel common-rail systems are particularly sensitive to water and contamination. Fuel quality variations from cheap service stations can destroy injectors quickly. Regular fuel filter changes and draining water from the separator are therefore especially important on diesels.