What are the common issues with the 4G63 engine?

[McChristopher]

4G63 is an all-aluminum engine with the following advantages and disadvantages: 1. The biggest advantage of the 4G63 all-aluminum engine is its lightweight, which helps achieve fuel efficiency by reducing weight. 2. Additionally, aluminum has good thermal conductivity, so the engine's heat dissipation is correspondingly better. 3. The disadvantages include the cylinder block's thermal load capacity being inferior to cast iron engines, the potential for power increase being less than cast iron, aluminum's corrosion resistance being worse than iron, and the price being significantly higher than cast iron. Here are specific details about the 4G63 engine: 1. The 4G63 is an internal combustion engine for cars, used in the EVO. 2. Mitsubishi announced that the next-generation Mitsubishi EVO will no longer use the 4G63 engine. 3. Currently, the EVO has evolved to its 10th generation, with an 18-year history of being 'time-tested'.

[DeJuliet]

From my car repair experience, I've learned that the 4G63 engine has several common issues, with the crankshaft misalignment problem being the most troublesome. Many longtime owners complain about sudden engine failure after tens of thousands of kilometers, with inspections revealing displaced crankshaft bearings that directly cause severe internal engine damage. This issue becomes more apparent during aggressive driving – if you frequently floor the accelerator, you should be cautious. Another prevalent problem is turbocharger system leaks, which reduce engine power and may cause hissing sounds during startup or increased fuel consumption. There's also the camshaft position sensor failure, which leads to hard starting or unstable idling, accompanied by warning lights on the dashboard. Piston ring wear is another common issue causing oil burning – you might notice blue smoke from the exhaust. Overall, these problems affect reliability. I recommend regular checks of sensors and oil condition, as timely replacement of wear-prone parts can extend engine life. I've seen many cases where early prevention saves significant repair costs later.

[IanLynn]

I used to drive a car with the 4G63 engine, and what impressed me most was the turbo oil leakage issue. During long drives, I always smelled a pungent odor. Over time, the power noticeably weakened, and acceleration wasn't as sharp as before. There was also a crankshaft misalignment fault—my engine suddenly blew after 100,000 kilometers, and the repair shop said the bearing position had shifted, damaging the crankshaft. Ignition issues were frequent too, like when the camshaft position sensor failed, causing delayed ignition or idle shaking, especially noticeable during cold starts. Piston ring wear led to fast oil consumption, requiring top-ups every few thousand kilometers, which was a hassle. Burning oil also caused smoke from the exhaust pipe and polluted the environment. Overall, this engine performed well but had many minor issues. When buying a car, you need to carefully check for these problems, or the repair costs can be shockingly high. Now, I pay extra attention to sensor conditions during maintenance, and the car runs much smoother.

[LincolnFitz]

Common issues with the 4G63 engine include crankshaft misalignment damage, turbocharger leaks, camshaft sensor failures, and piston ring oil burning. Crankshaft problems are prone to occur under high-load driving conditions, potentially leading to engine failure. Turbocharger oil leaks affect power output. Sensor malfunctions can cause difficulty starting the vehicle or unstable idling. Worn piston rings result in rapid oil consumption. Additional concerns include cylinder head gasket issues and water pump leaks. These stem from design flaws, requiring regular maintenance for long-term use.