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This article's opinion: There are two situations where oil enters the spark plug, one from outside the cylinder and the other from inside the cylinder. cylinder. Both situations will cause the engine to malfunction. The cylinder is not working properly. Actually, the word “penetration” is not correct, because from the point of view of the spark plug material, it is impossible for engine oil to penetrate metal and ceramic. It must be said that the candle is fixed on it. engine oil, so in the following description everything is changed to grip.
First, let's talk about the situation where the spark plug body outside the cylinder sticks to the engine oil. Currently, most engines are designed with double overhead camshafts, so the spark plugis placed in the middle of the two camshafts. This position is completely covered by the valve chamber cover, so only 4 circles can be reserved on the valve chamber cover. The holes make it easy to disassemble and install the spark plug. If the gaskets of the four round holes of the valve cover are not properly sealed, engine oil will flow into the spark plug installation hole, causing the high pressure plug. of the spark plug body and the ignition coil connected to it. Being stuck by engine oil, it is easy for the high voltage cap of the ignition coil to be corroded by engine oil and the high voltage electric current leaks out. due to the conductive properties of engine oil, which will weaken the trigger spark of the spark plug, causing the engine cylinder to malfunction and vibration when idlingti. A range of problems include poor acceleration, reduced power and increased fuel consumption.
Secondly, let's talk about the situation where the spark plug body located inside the cylinder sticks to the engine oil. The most critical electrode part of the spark plug is located inside the cylinder and its quality is directly related to the ignition performance of the spark plug. If the engine piston ring or intake valve oil seal is not sealed tightly, oil will enter the cylinder, causing adhesion to the spark plug electrode. After high temperature combustion, carbon deposits will be produced, which will adhere more. firmly to the spark plug. On the electrode, a vicious circle will occur over time, and the spark plug electrode will be completely covered with this carbon deposit, preventing the spark plug frome to flash and ignite the mixture normally. will also cause the engine cylinder to malfunction, idle jitter, poor acceleration and reduced power, a series of problems caused by increased fuel consumption.
Thus, once these two situations occur, repairs must be carried out immediately to avoid more and more serious engine breakdowns.
I hope my answer can help you.
Oil seeping into the spark plug can cause the spark plug to short circuit and malfunction, resulting in poor fuel consumption. extremely high.
Excess oil in the cylinder will directly affect fuel consumption and power. The appropriate oil ratio can guarantee the lubrication and combustion rate of the engine.
There will be very thick blue smoke coming from the exhaust. Ifthe two stroke is on standby, it's not a big problem but it is the fuel consumption. , you need to check if there is a problem with the cylinder.
Cause of occurrence:
1. The valve cover may leak oil into the spark plug.face.
2. The valve cover gasket may need to be replaced. This is the rubber seal between the cover and the cylinder head.
3. Judging from the structure of the spark plug of a gasoline engine, the spark plug is stained with engine oil, or even a Completely immersing the spark plug in engine oil will not be enough. damage the spark plug and cause it to be scrapped.
If there is no fault causing oil to enter the cylinder, but the spark plug is just stuck with oil and it does not there is not much oil, there will be no real impact on the car, as long as it isut still start. There is nothing wrong with the engine. There may be a little blue smoke after starting the engine, but as long as the engine oil is burned quickly after starting the engine, everything is fine. will be normal and nothing will happen anymore, even if there is a small carbon deposit, it can also be discharged normally.
Today's cars are all four-stroke. Normally there is no oil in the cylinder and on the spark plug. But if you accidentally get oil on the spark plug, just wipe it off and install it. , no problem. If oil enters the combustion chamber of the cylinder for other reasons, you can start ignition without installing a spark plug. This way, even if the engine cannot start, you can drain as much oil into the cylinder as possible and then install the spark plug. candle and start.
Although it can be a little difficult at firstrrage and there may be a little blue smoke after starting, this will be normal as long as it works for a while and there are no other adverse effects. If there is a fault that causes oil to enter the cylinder and enter the spark plug, you must first find and eliminate the fault, then install the spark plug and start.