Car feelings
Car from 2015/10/27 purchase and use to now has been more than 6 years, ran more than 117,000 kilometers. 6 years down there is no particular problem, very save no major problems. Just no one is perfect, no car is perfect, minor problems do exist some. Peugeot 4S stores have changed from 3 in 2015 to 1 at present. Car maintenance in the first warranty, but also their own auto repair store maintenance or purchase oil, filters and other raw materials to do their own maintenance. Niche car maintenance is expensive, they also like to toss plus 4S is really too far from home. This has resulted in the maintenance and troubleshooting of a car that does not rely on the aftermarket status quo.
Awareness of fuel additives for French cars
Maybe it is the initial problem of the engine design, or not referring to the maintenance manual to add fuel additives according to the number of kilometers, more and more owners of the 408 are facing the problem of burning oil. Out of love for the car, we also have a group of *** with the seminar 408 (French) owners, from the ordinary QQ group to the auto parts group. French car owners all over the world. Currently there are two repair options, one is to overhaul the engine, and one is to use piston release agent to clean up the carbon buildup mainly. Although the new car has been ordered, but taking into account the preservation of value considering the time spent with 6 years, 408 is not ready to sell. Still want to repair and maintain good, to ensure that the car is in normal condition to use on their own.
Simple understanding of oil burning
I was initially unsure of how much of an impact fuel additives have on a vehicle's oil consumption, simply put the current state of my car, the following group of pictures is what I recently did to maintain the article is followed by the recent experience of oil burning repair, first leak, oil burning has been a lot better at the moment, from 1000 kilometers of one liter of oil to the current From 1,000 kilometers and a liter of oil to the current 6,000 kilometers without adding oil, the change is very noticeable. I'll talk about how I did it later. Because of the whole process of burning oil repair, fed up with the highway service area people on the bathroom I add oil journey, so the pain, must solve this problem.
First on a set of beautiful photos and maintenance group picture:
Look at my burnt oil repair experience
Speaking of burnt oil, is our 408 owners the most concerned about the problem, although I'm very satisfied with the 408, but for the and car friends to go out to play, other people on the highway to go to the bathroom, I went to the highway service area to add oil this thing, is really gripping. I am a pursuit of perfection, painstakingly, determined in the case of 4S does not care, to solve this oil burning problem themselves.
Several types of oil-burning repair program comparison
Query a lot of ways to heat the cylinder this risk is too high; overhaul certainly do not do, the loss of the car is too big work is also high, but also assembled bad accessories; add to the oil inside the repair piston ring, feel also not thorough, after all, the piston ring is the oil circuit combustion time long high temperature carbon caused by the can not be removed to the root; I do maintenance work, to the medical equipment repair, so I do maintenance work. Medical equipment repair, so I am very clear about a principle, as long as you find the problem, meet a logical approach to this problem, the risk is very small, you can basically solve it.
408 this car burns oil in addition to direct injection engine has a waste valve problem, for the EFI 1.8L car does not exist waste valve problem, two types of engines at the same time superimposed on the problem focus on the piston ring stall leads to oil scraping is not clean, there is a phenomenon of oil involved in combustion. Continuous combustion of oil leads to greater carbon problems, resulting in more serious oil burning results, and finally the three yuan is also contaminated bad, serious carbon deposits may also pull the cylinder resulting in the need to overhaul the engine results. So I'm anxious about pulling a cylinder one day and anxious to solve the problem at hand.
No engine overhaul without cylinder pulling
Here is a definite conclusion for you, which I learned from my acquaintance with the garage, as long as the car does not pull a cylinder, you do not have to overhaul the engine, or as long as it is not a serious cylinder pulling without overhauling the engine, overhauling the engine is too many drawbacks, but unfamiliar garages especially want owners to overhaul the engine, for one thing, they can be practicing for the apprenticeship and the mid-level laborers, and the other, the overhaul income is quite a lot. Secondly, the income from overhauling is quite high. But we car owners face a huge loss of residual value of the vehicle and different skills of the repairman to install the engine when the risk of the problem, and many repair shops are not liquid nitrogen --- this is the need for strict procedures before you can use, without this engine cooled to minus 20 degrees above the equipment it is not possible to complete the assembly of the engine expansion and contraction of the engine, that is to say, ambient assembly is not likely to be intact, and the original factory! The difference is too great.
After a few inquiries, I finally came across a way to repair the released piston ring in a repair shop, but it is necessary to check before repairing it, so here's a look at my road to repair.
Repair piston ring jam
Really start checking the oil burning problem
Saying about the location of the check, because this car exhaust valve in the cylinder head, so used the exhaust valve negative pressure meter test, no problem, it is said that this car's exhaust valve is bad is also quite small. Checked the cylinder piston carbon and cylinder wall, this link is mainly to see if there is no serious wear and tear of the cylinder wall, serious wear and tear can only overhaul the engine, which is the last thing I want to see. The result is that there is no problem, see the following picture
Electric injection piston carbon deposits are so serious, I guess and I usually never use fuel cleaner has a lot to do
The top of the piston above the carbon deposits is very strong, black and bright, the workshop said it is very serious, that the oil circuit for a long time combustion is not good, it is extremely easy to lead to the piston ring stuck burning oil. Fortunately there is no cylinder pull. This kind of carbon will pull the cylinder if you don't care a little. Pulling a cylinder is overhauling the engine, so my car meets all the requirements for a restoration to release the piston rings.
Specific repair method
According to the operation requirements of the repair shop, once in the oil tank to add three Siyupu oil burner repair agent, is to add the oil tank of the ha, this I did not understand the specific principle, but the results are very satisfied. The picture
Check after half a tank of oil
One time to add so much restorative agent also do not know why, Sima as a living horse cure it. Immediately after adding oil to pick up the weekend play in the countryside, more than 300 kilometers round trip, this half tank of oil, the biggest feeling is the throttle is strong, the car opened up the sense of push back significantly enhanced. Throttle do not dare to give too much, give a little on the very strong. A tank of oil will run out soon, came to the repair shop is still endoscopic inspection, see the following picture
The top of the piston of the four cylinders of the carbon changes, the changes are very obvious, very unexpected results. So decisively continue the rest of the three repair program, the repair shop's recommendation is 4-5 repair release piston ring. Because of the longer time, even if the piston ring is released, but also need a consolidation, usually I like the car 4 times to release the end, it is best to consolidate the back again, I first engage in four times the restoration program. There are also times when I photographed the endoscopic inspection, see the following group of pictures
Second review of the results
The following is the result of driving the second tank of oil inspection, the repair shop before the endoscope is broken, with a new endoscope photographed, I feel that the new equipment clarity is much higher.
Metallic color are very clear, we are most concerned about the change of oil burning, the following I briefly said.
After the first tank of oil there is no oil burning relief and improvement just feel a lot better power, the car is particularly strong. After the second tank of oil, the drop of the oil dipstick did not reach the bottom, because before 1000 kilometers 1 liter of oil, two tanks of oil is certainly to add oil. Below, the oil dipstick was checked three times for fear of making a mistake, and indeed every time I checked it was in the middle. This lift change is more noticeable now.
The repair shop said at the time, this can also be improved a lot, to be honest, from a thousand kilometers a liter of oil, so quickly on a thousand kilometers half a liter of oil changes really make me feel a little dreamy, the original thought really can not get it on the sale of the car, just my car renovation of such a great energy, very reluctant to sell. This change in oil consumption gives me hope.
Results
I didn't take any pictures of the latter change, after all, always go to the repair shop also delayed, say the final result, after 4 repairs, I drove another 4,000 kilometers, the oil dipstick didn't change, in fact, in the third tank of oil, the oil can't be seen to change, the experience let me darkness is bright and a village. I can't really express it as I write this, it's just that the results of a good fix were exciting at the time.
Finally
Do a final summary of it, 408 1.8L burning oil is a lot of owners and I have the same headache, the reason for this is that the oil circuit is usually not clean lead to, the manufacturer is prompted to clean the oil circuit, just this problem 4S is also very indifferent, I do not know whether it is in order to the back of the overhaul or simply did not notice, or it is the owners themselves are refused! I have seen the store let add additives, I was refused, then really do not believe. After burning oil, I was really educated, this education consumes time and energy and mental conflict process, this cost is too big. After this release of the piston ring, in the future, I am sure to often use some suitable for domestic fuel additives, in order to prevent again because of the oil circuit is not good, poor combustion leads to carbon overload appeared to stall and burn oil. Repair shop is very recommended that I use this kind of Division has Pu original liquid type of additives, they said this time additives, I really believe.
Although I am a naturally aspirated EFI car, in fact, after this period of time, my personal understanding, direct injection of the 1.6T engine is as suitable for this approach, provided that the other parts are not fault, only the piston ring stalling this one problem.