Factors affecting cylinder sealing
1. Cylinder wear
2. Damage to piston rings
3. Piston wear
4. There is a gap in the valve
5. Damage to the cylinder gasket
Composition of cylinder seals
1. Piston rod seal: piston rod dustproof + piston rod seal (more commonly used is two in one), piston rod buffer, piston rod guide support ring ;
2. Piston seal: piston seal (usually 2 U-shaped), piston guide ring (usually 1, located in the middle of the two piston seals), buffer at the end of the piston pieces;
3. Other static seals, sealing rings, and static part seals are called static seals.
Factors affecting cylinder sealing
The quality of the cylinder sealing can be judged by testing the cylinder compression pressure. The main tool is the cylinder pressure gauge. You can refer to the following rules:
1. Low pressure occurs in two adjacent cylinders, while other cylinders perform normally.
2. It was found in many measurementsCylinderThe pressure reading fluctuates high and low.
3. The pressure reading is low.
4. The pressure reading is too high.
Solutions to try
1. For the problem in 1 above, you can consider whether the cylinder head bolts are tightened or whether there is air leakage between two adjacent cylinders;< br />
2. For problems in the above 2, you can check whether the valve is closed tightly;
3. If there are problems in the above 3, you can inject lubricating oil and test again. If it still doesn't work, check whether the valve is closed tightly;
4. For the problems in 4 above, you can check whether there is too much carbon deposit.
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