How to distinguish intake and exhaust valve seals on Mitsubishi Pajero?
4 Answers
Mitsubishi Pajero valve seals can be distinguished by color: blue indicates intake, while brown indicates exhaust. The function of valves is to specifically input air into the engine and expel exhaust gases after combustion. Structurally, engine valves are divided into intake valves and exhaust valves. The active safety system of the Mitsubishi Pajero helps drivers avoid traffic accidents, such as the four-wheel ABS system combined with an electronic brake-force distribution system. Passive safety features include dual airbag systems for both the driver and front passenger, an energy-absorbing steering column, and side impact bars, which reduce the risk of injury to occupants in the event of an accident.
I remember that when distinguishing between intake and exhaust valve seals during Mitsubishi Pajero engine repairs, the key is to look at their position and features. The valve seals themselves look similar, but the intake valve is on the intake manifold side, while the exhaust valve is on the exhaust manifold side—just identify their positions during disassembly. The exhaust valve seal is designed to be more heat-resistant and may be slightly larger or marked with a darker color. Before installation, measure the inner diameter with a ruler: the exhaust seal is slightly wider. If you don't have a manual, observe the engine layout—the left side is usually intake, and the right side is exhaust. Don’t install them backward, or it could lead to oil leaks and engine damage. Regular maintenance can reduce this issue, especially for older Pajeros. I recommend buying an OEM kit, which comes with distinguishing marks, saving time and effort.
As a hands-on DIY car owner, I figured out a method when replacing the Pajero's valve stem seals. The seals look similar, but the exhaust valve seals are made of harder material due to exposure to high-temperature exhaust gases. The intake seals are located at the front section of the engine and are easier to access. When in doubt, mark their positions before removal or take reference photos with your phone. For safety, keep tools organized and proceed step by step. The smell of mixed oil can indicate incorrect installation—a burnt smell suggests exhaust seal issues. Pro tip: Though a small job, it affects fuel consumption. Given the Pajero's tight engine space, beginners should start practicing with simpler components first.
Distinguishing between intake and exhaust valve oil seals lies in understanding their differences. Exhaust valves are exposed to high-temperature exhaust gases, so their seals are designed to be more heat-resistant and durable; intake valves, on the cooler air side, are prone to debris accumulation. Position identification: On a Pajero engine, intake valves are located at the front, while exhaust valves are at the rear. If seals lack clear markings, rely on their positions for installation. Incorrect installation can lead to oil leakage into the combustion chamber, damaging the engine. A simple method is to mark them with numbers before disassembly or refer to the repair manual. Safety tip: Regular oil changes and maintenance can prevent such failures and extend the Pajero's lifespan.
