There are various thread repair kits on the market to conduct this repair, and power tools are not needed in this case.Ī popular and effective kit you can invest in for this operation is Heli-Coil. The exciting news is that vehicle owners can fix this issue. Solution of cylinder head bolt threads problem If this issue is not corrected as soon as possible, it may damage your vehicle. Also, a damaged cylinder head bolt threads may result in overheating.Ĭylinder head bolt threads problem may occur due to inadequate torque and low-quality bolt from the factory. This causes the coolant to flow through the head gasket. Whenever the bolts become weak or wear out, coolant leakage occurs. The cylinder head bolts connect the head cylinder and the head gasket to the engine block.
It costs as high as $7000 in some cases to get the job done. The repair/correction of this issue is costly. The engine will have to be removed and disassembled to solve this issue, Once you realize a defect in your vehicle’s oil consumption rate, make sure you take it to an expert to get it checked. If it is not corrected as soon as possible, it may result in engine failure. Once this issue starts, it may cause your vehicle to burn about 1 liter of oil at every 1.2k miles covered. It becomes evident after the completion of about 50,000 miles. Excessive burning of oil occurs as a result of inappropriate piston rings. This is one of the most popular issues with the 2AZ-FE Engine. In that case, this may reduce the resale value of your vehicle. Suppose identified issues or problems are not corrected as soon as possible. Whenever any issue is detected, timely correction, repair, and replacement of the affected parts are advised.Īlso, ensure you use high-quality oil and top-quality components whenever necessary for improved quality, efficiency, and performance.įor best performance, vehicle owners should ensure that the engine oil is replaced at every 60,000 miles covered. When you embrace a proper maintenance culture, the Engine will serve you for an extended period. This key attribute has made it very popular among vehicle owners around the world. The 2.4 engine is one of the most reliable and powerful engines ever built in automobile history. Some of the vehicles that are equipped with the 2AZ-FE Engine include: The high level of efficiency recorded with the use of the 2AZ Engine upon its introduction in 2002 led to the adoption of this engine in several vehicle models and designs. Vehicles that are compatible with the 2AZ Engine 2 balancer shafts inside the crankcase for reduced vibration.Designed with aluminum cylinder block with sleeves.Some other notable and crucial advanced features of the 2.4 engines are the variable valve timing with intelligence (VVT-I) and slant-squish combustion chambers. Also, the cylinder block improves the cooling system’s efficiency. The 2AZ-FE incredible features contribute greatly towards enhancing the engine’s reliability and efficiency.įor instance, the aluminum cylinder head brings a massive improvement in power and efficiency, thanks to its DOHC design. These materials combine amazingly to keep the engine’s weight in check, making it a perfect fit for economy-focused vehicles. The 2.4 engine was designed using an aluminum block with cast-iron cylinder liners. In this section, we will look at the specs of the 2AZ-FE Engine. Thanks to its direct injection system.Īlso, the compression ratio increased to 9.8:1 in the new engine design instead of the initial ratio of 9.6:1. Compared to the 2002 engine, the redesigned 2.4 engine provides vehicles with improved power and torque. Toyota remodeled the 2.4 engine in 2008, six years after the first release. Some advanced features made it a bigger and worthy replacement for the old 2.2L 5S-FE Engine.Īlthough the 2.4 and 2.2 engines look almost alike, there is a difference in the displacement. The 2.4L 2AZ-FE Engine was introduced to the market in 2002. 4.1 Related Posts: Toyota 2.4 Engine Details (2AZ-FE)