Engine Overview and Common Failures
The dry weight of the G4GB engine according to the catalog is 146 kg. The G4GB engine number is located on the right, above the gearbox. Floating RPM. This is a simple and very reliable unit, and most complaints on the forum are related to unstable operation of the engine, particularly floating RPM at idle. As with many other engines, the main cause is throttle or EGR valve contamination. Ignition system. Another weak point of this engine is the quite finicky ignition system: ignition coils, high-voltage wires, and spark plug contacts are often replaced. Timing belt breakage. According to the manual, the timing belt should be replaced every 60,000 km, and this short interval is not without reason, as belt failures at high mileage occur regularly and usually result in valve bending. Other drawbacks. Oil constantly leaks from under the valve cover here, and the engine supports do not last long. And don't forget to adjust the valve clearance, as there are no hydraulic compensators.