Recently, the dragon boat in Shenzhen has been under the water all day. After a whole day of sparse underground yesterday, it has finally stopped today, and the car has been prompted to maintain more than 600km. Take advantage of the rare “good weather” on Sunday. Try JD.com, who keeps a car that feels good all the time.
Today’s maintenance items are regular A protection and replacement of spark plugs.
In strict accordance with the maintenance tips in the forum, change the spark plug every 40,000 kilometers, this thing can not be ignored. According to the car maintenance records, the last spark plug replacement is 37000 kilometers, this time 76000km to carry out the second replacement, needless to say, start.
The master is disassembling the igniter, and the innermost one is a little ruined.
After removing the igniter, wait for the spark plug to be replaced.
Remove the igniter, you can remove the spark plug, the master said that 2, 3 cylinder spark plug leakage phenomenon, the specific performance is that the white part of the coil will have a yellow metallic stain. And said that the leakage affects the power, although I do not feel anything during the driving process.
Replaced spark plug, white ceramic part (? ) A circle of metal stains can be seen at the bottom
Originally, I wanted to use an endoscope to see the carbon deposition, but because it was a new store and the equipment was not complete, I had to use a flashlight to see it by myself. He said that it was more serious. There was carbon accumulation at the top of the piston. How about the spark plugs? Maybe the picture is not very clear, more forgiveness!
Before installing the new spark plug, the master also carefully compared the spark plug model (the old one is the original factory), which is very good. However, there doesn’t seem to be any specific torque wrench for installing spark plugs, and I don’t know much about this (here’s a reminder to use 23Nm torque wrenches).
The master is installing spark plugs.
After that, the oil was routinely changed. at first, the master wanted to draw out the oil directly, saying that he did it now, but later, at my insistence, he still used gravity to release the oil (according to everyone’s reply, both ways are the same). So the master first filtered the oil and then lifted the car. After he lifted the car up, I ran out to buy water and missed this part of the work. By the time I came back, I had run out of oil, and the master didn’t notice how many liters it was released, and I didn’t have a chance to see how dark the oil was.
When the installed chassis is very funny, there is one screw missing at the bottom of the picture, and I don’t know when it didn’t exist. The master said it didn’t matter, and there was a chance to install another one at the back (also because of the new store, there were no screws at all)
Our consensus on the amount of oil is 6.5 liters, and subsequent episodes have confirmed this perception. The master took my 5-quart oil as a 4-liter barrel and poured 7.5 liters into it. When I left the store, I didn’t realize it. When I got home later, I didn’t think it was right. How come the second bucket only left me less than 2L? didn’t it add 4.73L to 2.73L? As soon as I got home, I checked the dipstick, and sure enough, it froze. Then went back to the store to draw out some of the oil, and then the oil level was at the bottom of the middle of the oil ruler, so once again confirm that the M274 gravity oil filling volume is 6.5L, 6.5L, 6.5L, 6.5L!
The master also kindly checked the tire pressure for me and said that he found that the tire pressure reached 1.8, increased it to 2.3 for me, and lowered it to 2.1 for me. I am very confused here. Six months ago, I tested it to be 2.0. Is it possible that the tire will slowly leak?
At this point, the end of this maintenance, I finally gave TuBen back to the forum magic oil, initially opened down there is no obvious sense of promotion, to see if there will be any surprise.
Please also see if there are any irregularities in this maintenance process, or the hidden dangers left behind.
As for carbon deposition, I don’t think it has much impact on power at present, so I think I’d better wait until 100000 kilometers and change the thermostat to clean it together.
If you see here, thank you for your patience and look forward to your message. Thank you.
DaleMalan 
5 
September 4, 2024 
