vq35hr Timing Cover Leak: A Costly Repair

The VQ35HR engine is known for its reliability and performance, but even with proper maintenance, it's not immune to issues like the timing cover leak. As a VQ35HR owner myself, I've experienced this problem firsthand and can attest to the fact that it's not an easy fix.

Initially, I thought I just needed to replace the water pump and gallery gaskets, which seemed like a straightforward task. However, after researching and consulting with mechanics, I realized that the issue was much more complex. The rear timing cover has a RTV silicone gasket that seals it to the engine block, and over time, this gasket can fail.

I've been told by multiple mechanics that attempting to externally seal the leak is not possible, and that only Infiniti dealerships have the expertise and OEM parts necessary for the repair. This means that replacing the rear timing cover requires a significant amount of disassembly, including removing the radiator, bumper, headlights, and more.

I've had my car for just over a year and a half, and I'm still trying to wrap my head around the cost of the repair. The parts alone are expensive, and labor costs will add up quickly. I've been quoted prices upwards of $5,000, which is a significant amount considering I paid only $10,000 for the car.

In hindsight, I wish I had done more research before attempting to diagnose and fix the issue myself. However, I hope that by sharing my experience, others may learn from my mistakes and be better prepared to deal with this costly repair.

Vq35hr timing cover leak