Engine Overview and Common Failures
The weight of the 1G-FE engine according to the catalog is 180 kg. The engine number 1G-FE is located at the junction of the block with the gearbox. The oil pressure sensor. Before the upgrade, the unit was simple and reliable, and its weak point was considered to be this sensor: it not only regularly malfunctioned and often failed, but also simply leaked. Failures in the operation of the VVT-i clutch. The upgraded version of this engine is equipped with a VVT-i phase controller on the intake, which does not like dirty oil. Slag settles on the valve plunger and it jams. Timing belt breakage. In addition to the camshaft gears, the timing belt here also has to drive the oil pump, which often leads to its breakage in the winter period when they rev up on cold starts. The first modification of the engine is not afraid of breakages, but the BEAMS version usually bends valves. Oil consumption. This problem affects all versions of the power unit. With high mileage, piston rings clog here or oil control rings freeze, resulting in oil consumption. Minor breakdowns. We will list less common and simply less significant problems: idle speed often fluctuates due to throttle contamination, EGR or MAF, condensation often occurs around the valve cover gasket and spark plug wells. There are no hydraulic compensators, thermal clearances of the valves need to be adjusted periodically, and initially this was done by selecting washers, then in the BEAMS version - using measuring cups.