Exhaust Valve for Nissan Engine ?

This exhaust-side engine valve is a critical part of the cylinder head. It is needed to let burned gases leave the combustion chamber at the right moment. When timing is correct, the engine breathes out smoothly, keeps good power, and protects the catalytic converter from overload.

How It Works ⚙️

The camshaft opens the valve through the valve train, and the valve spring closes it tight on its seat. This tight seal keeps compression inside the cylinder during the power stroke, then opens again to push hot exhaust gases into the manifold. The valve face and stem must stay straight, clean, and heat-resistant to survive extreme temperatures.

Why Replacement Matters ✅

A worn or bent valve can leak compression and upset combustion. Common results are rough idle, weak acceleration, misfire, higher fuel use, and a “ticking” noise. If it breaks or burns, it may damage the piston, cylinder head, and turbo/catalyst, turning a simple repair into a full engine rebuild ?.

Compatible Models

• Nissan 6 Wagon