Engine Overview and Common Failures
The dry weight of the G4EE engine according to the catalog is 116 kg. The G4EE engine number is located on the right, above the gearbox. It is a simple and reliable unit, and owners on forums complain only about minor issues: mainly unstable engine operation due to throttle, EGR, or injector contamination. Also, often the cause lies in cracked ignition coils or high-voltage wires. In the official manual, it is prescribed to replace the timing belt every 90,000 km, but it doesn't always reach that mileage, and in most cases, valve bending occurs with its breakage. The short chain between the camshafts usually stretches by the second timing belt replacement. Oil consumption often appears after 150,000 km, and when it reaches one liter per 1000 km, it is recommended to replace the oil control seals in the cylinder head, which often helps. Sometimes the blame lies with stuck oil control rings, but they usually last along with carbon deposits. Other defects mentioned on the specialized forum include frequent lubricant leaks from seals, short-lived supports and hydraulic lifters, which often make noise even before reaching 100,000 km. The engine can also have difficulties starting due to a clogged fuel filter or fuel pump.