Engine rings often wear out, and drivers rush to replace them. After repair work, it is discovered that the engine does not work properly and you have to contact the service station again. The most common situation is that after replacing the rings, the engine smokes, bleeds, consumes oil, or does not run at all.
What to do if the engine consumes oil after replacing the rings
If, after replacing the rings, the car begins to consume oil abundantly, then the problem in most cases is observed when installing non-original spare parts. Also, specialists always clarify information about the vehicle’s mileage. If the motor has a lot of wear, it means there are leaks.
Instructions:
- valve checking;
- head inspection;
- evaluation of seals;
- Change of oil.
If the above steps help identify an additional malfunction, then it will need to be eliminated. Otherwise, you will have to replace the rings with a more suitable one.
How much oil to pour into the VAZ 2106 engine
First generation 2106, 1975-2006
The VAZ-2106 was a modernized three-ruble car. The developers decided to slightly reduce the cost of the car's appearance by getting rid of unnecessary chrome elements. As a result, the car received new bumpers and front fascia, different rear lights and other minor external improvements. In addition, there are new door cards inside, as well as a hazard warning button on the front panel. After 1987, a 5-speed manual transmission began to be installed instead of a manual transmission-4, and in the 1990s the design and interior were significantly simplified - metal elements were replaced by plastic parts to reduce the cost of production. But the car received a heated rear window, a contactless ignition system, halogen headlights and new seat upholstery. In the last years of production, the 2106 was offered with an 80-horsepower 1.6-liter injection engine.
Also read: Engine oil for Geely MK Cross engine
Gasoline engines 1976-2001
- 1.3 64 l. With. (21011), oil volume - 3.75 liters, tolerance and viscosity: API-SG, SJ, SH; SAE 5W-30, 10W-40, 10W-30, 5W-40
- 1.45 73 l. With. (2103), oil volume - 3.75 liters, tolerance and viscosity: API-SG, SJ, SH; SAE 5W-30, 10W-40, 10W-30, 5W-40
- 1.6 76 l. With. (2106), oil volume - 3.75 liters, tolerance and viscosity: API-SG, SJ, SH; SAE 5W-30, 10W-40, 10W-30, 5W-40
Engine overheating
It is also possible that the engine gets very hot after replacing the rings. Most often this is accompanied by increased vibration.
Possible problems:
- shrinkage of compression rings;
- erasing liners;
- roller wear.
If problems are observed with engine thrust, it is necessary to conduct a superficial diagnosis. The valve seals are inspected; it is important to check the position of the rings. The gaskets must be in place, there should be no large cracks or bulges. The upper liners must be clean without obvious abrasions.
The belt and rollers are also subject to inspection. When replacing rings, you can ask a specialist for more information about the cylinder measurements. There is special equipment for measuring the ellipse of elements. The technician inspects the gaps in the locks. If the engine overheats on a regular basis, the rings will have to be changed urgently.
Increased engine oil consumption. Causes and solutions
Cars with mileage up to 150,000 km should usually be within the normal range. Older cars with up to 300,000 km may not have lost oil yet, but this is a much rarer occurrence. In both cases, you should start with a thorough inspection of the car on a lift.
What to do when the car starts to consume oil? Engine check
Remove the top and bottom engine covers and carefully inspect from all sides. Finding obvious leaks from gaskets, fixtures built into the engine housing, or crankshaft seals provides the first clue as to where the engine needs to be sealed, as well as what repairs are required. If the engine is dry, check the cylinder compression ratio to determine the tightness and functionality of the piston ring system. A compression ratio that is too low may indicate excessive wear on the cylinder liners, pistons or piston rings, which allows oil to leak into the combustion chambers, especially during acceleration and therefore under load. In this case, it will be necessary to overhaul the engine or replace it with another one in better condition. This is one of the black scenarios.
In a gasoline engine, you can also check the condition and color of the spark plugs. They should be the color of coffee with milk. If they are black and smoky, see point above. In older engines, hardened valve stem seals that allow valve stem passage into the combustion chamber can also cause oil loss. Simply replacing seals does not mean overhauling the engine. Most often they can be replaced by removing only the head.
Checking the gas distribution system
Also check the functionality of the vehicle's gas distribution system. If the belt and rollers have not been replaced for a long time, this can also affect excessive oil consumption. The gas distribution system is the heart of the engine and must be 100% functional.
The Achilles heel is also the turbocharger, in which, after prolonged use in very extreme conditions, the sealing system begins to fail. It is usually lubricated with the same oil that circulates in the engine. The oil enters the intake system through the used seals of the compressor rotor axles and is then burned in the cylinders. The presence of oil in the intercooler confirms that this type of turbine is faulty. Then it is necessary to repair the turbine or replace it with a new one.
Engine oil consumption and air filter
A trivial reason could also be non-compliance with the oil and air filter change intervals. A completely clogged air filter increases the vacuum in the intake system, which makes it easier for oil to enter the combustion chambers.
These are just some of the most common causes of excessive motor oil consumption. In sports cars, due to changes made to the power units, there will be even more such reasons.
If the engine smokes after replacing the rings
Using the Skoda Octavia 2010 as an example, we can consider the case of smoke. Even if you select original rings for the vehicle, problems may occur. Situations occur under various circumstances:
- during heavy loads;
- sudden rise;
- traction force;
- acceleration
If you look at the original Skoda rings, you can see that they were made with small holes. Some rush to turn to a turner to have the elements knocked out on a workbench - to make grooves.
In fact, it is necessary to understand the essence of the problem and inspect the rings. In ideal condition, they should be rigid and fit tightly to the cylinder.
Additional actions:
- nozzle replacement;
- change of linings;
- checking the video.
When replacing rings, specialists often make mistakes:
- constriction;
- use of non-original spare parts;
- chain change;
- pulley clamp;
- crankshaft rotation;
- low quality tool.
If you turn to a non-professional, the driver will definitely be faced with ordinary rings, but they do not always fit in shape, and there are often problems with strength. Inexperienced specialists try to tighten the knots as much as possible. And since a regular thread is used, it is easy to tear off.
What determines engine oil consumption and how to reduce it
As mentioned above, oil is consumed in any engine, since the oil film on parts to protect against dry friction burns in the chamber along with the fuel charge. If we add to this the natural wear and tear of the internal combustion engine during operation, then lubricant consumption further increases.
The fact is that at many service stations, technicians prefer not to diagnose a separate cause of increased oil consumption, but immediately offer the owner to make major repairs. It is important to consider that such expensive repairs are not always necessary.
- First of all, lubricant consumption may increase due to oil leaking from the engine. In this case, it is enough to replace the gaskets and seals. Generally, you need to pay attention to the valve cover gasket, cylinder head gasket, front and rear crankshaft oil seals, camshaft oil seals, valve seals, etc.
In various situations, lubricant can flow along the external surface (leak out) and also penetrate into other systems. For example, if oil is leaking between the transmission and the engine, the crankshaft seal is at fault, and a puddle may form under the car.
If the cylinder head gasket turns out to be problematic, there may not be any leaks on the outside, the engine will be dry. In this case, the lubricant will enter the coolant, the coolant will become cloudy, the oil in the engine will also begin to foam, and an emulsion will appear under the oil filler cap and on the dipstick.
- If oil is actively consumed in the engine through waste, blue oily smoke will come out of the exhaust pipe. In this case, especially compared to a leak, it is much more difficult to determine the cause without disassembling the engine.
However, even in such a situation, you can try to fight the waste before agreeing to repairs. First of all, lubricant consumption depends on the operating mode of the motor. In other words, driving at high speeds leads to an increase in temperature and loads, the oil thins out, is less easily removed by rings from the cylinder walls, burns out, etc.
- It is also important to understand that the lubricant may not be suitable for the engine according to certain parameters. This means that you need to know which oil to choose for the engine and what features need to be taken into account.
Taking into account the above, it becomes clear that you need to use the most suitable oil both in terms of tolerances and high temperature viscosity index. For example, from the list of recommended lubricants in the manual, you need to select a product with a higher viscosity compared to what is currently filled.
You can also switch from synthetics to semi-synthetics, which in some cases also allows you to reduce lubricant consumption. The main thing is that such semi-synthetics are allowed for use in a specific internal combustion engine and comply with the recommendations of the engine manufacturer.
- Oil seals (valve seals, oil seals) are also an element, problems with which increase the oil appetite of the unit. At the same time, on many internal combustion engines, the caps can be replaced without removing the cylinder head; the cost of the spare part is very low. In some cases, lubricant consumption after replacement is significantly reduced.
The main reason for failure of valve seals is their drying out and hardening, since the elements are made of rubber. Also, the seals can be affected by oil that is unsuitable for the engine, which has an aggressive effect on the rubber.
- Symptoms of worn piston rings are often similar to their failure. If in the first case the rings need to be changed, that is, disassembly and repair of the internal combustion engine will be required, then in the second case the piston rings can be decarbonized.
Simply put, the accumulation of soot and coke does not allow the ring to move in the groove, that is, the rings are stuck. Reduced mobility means that the ring does not perform its function, the oil is poorly removed from the walls and burns out in the combustion chamber.
Each of the solutions has both its pros and cons, however, for a worn engine, in many cases it is possible to reduce lubricant consumption and extend the life of the engine until overhaul.
- An increase in crankcase pressure also causes excessive consumption of lubricant. In simple terms, high crankcase gas pressure causes oil to end up where it shouldn't be.
As a result, the lubricant enters the cylinders through the intake, after which it burns in the engine along with the fuel. In such a situation, it is necessary to diagnose and clean the crankcase ventilation system.
- Problems with the turbocharger also lead to lubricant leaks in the supercharger area, oil also entering the cylinders through the intake, etc. The solution requires diagnostics and repair of the turbine. As a last resort, you can replace the turbocharger, and the lubricant consumption will also decrease.
Running in the engine after replacing the piston rings
When replacing piston rings, drivers are often faced with the need to break in the vehicle. It is important that the parts get used to each other and no longer wear out.
Types of running in:
- easy option;
- standard;
- professional run-in.
The choice of engine break-in option after replacing the rings should depend on the condition of the car. If after a major overhaul, it is better to pay more attention to it.
When an engine is overhauled, it is necessary to carry out a standard break-in. The vehicle resource is limited, so you must follow the instructions.
Preparing for break-in
Before starting to break in the engine after replacing the piston rings, it is necessary to carry out the following preparations:
- Accumulator charging;
- vehicle inspection;
- clearance check;
- oil filling.
It is also important to think about the break-in route. A highway without potholes is considered ideal. If there are slopes, descents or sharp ascents along the way, this leads to unnecessary stress.
Reasons why the engine consumes oil?
Valve seals very often cause increased engine oil consumption. Oil seals are installed on the valves of the gas distribution system. Unexpected phenomena are possible here. For example, a poorly warmed-up engine increases the likelihood of hardening of the cap seals significantly, and there is no need to talk about used engines. A “stiffened” cap will not provide a seal, therefore, oil will flow freely under the guide sleeve, along the valve stem. After this, the engine oil will either fly out along with the exhaust gases, or enter the combustion chamber and, burning, cover the spark plugs. The result is and.
Piston rings are the second most likely reason why an engine is burning oil. One piston usually has three rings, two compression rings on top, and one oil scraper ring underneath them. I hope you know what compression rings are for. With their help, the manufacturer reduces the gap between the piston and the cylinder wall, resulting in maximum efficiency of the transmitted energy for engine rotation. In order to reduce the friction that occurs between the compression rings and the cylinder walls, oil is supplied to them, the remains of which are removed by the oil scraper rings. Wear of these rings leads to the fact that some of the oil will remain on the walls, therefore, oil consumption will increase. As a result, one day you will miss several liters of engine oil and come to the conclusion that the engine is eating oil.
During its “life”, the motor undergoes a large number of heating and cooling cycles. At the same time, all engine parts are tested. Wear of piston rings or loss of elasticity, in addition to piston rings, is also fraught with the occurrence of a phenomenon called flutter. This phenomenon has been little studied, but one thing is known for sure: when the engine is running, the ring can oscillate along the piston radius with a high frequency, or can repeatedly jump from one edge of the piston groove to the other. Due to such fluctuations, the engine consumes almost liters of oil; most often this malfunction manifests itself in the form of characteristic blue smoke from the exhaust.
Low quality motor oil, as well as oil that does not match the type of engine, also often causes the engine to start to take oil. This reason indirectly affects the previous malfunction. The fact is that each engine has its own oil; if it is chosen incorrectly, its consumption can increase significantly. Due to the fact that the oil is too liquid, the piston rings cannot “collect” it and it remains on the cylinder walls and, after the fuel-air mixture is ignited, it burns along with it. As a result, it either “flies out” with the exhaust, or is deposited in the combustion chamber or on spark plugs, but no matter how you look at it, the oil level will constantly decrease. Also, often the “wrong” oil is deposited in a thick oily layer on engine parts, this can lead to “sealing” or. If the rings are stuck, compression is lost in all engine cylinders.
There are other reasons why an engine takes oil, such as natural wear and tear. In this case, a comprehensive production of all engine parts occurs. As a result, oil is lost many times faster than during normal operation. Engine wear most often involves deformation of the cylinder walls as the engine continues to be used. An increased gap between the rubbing surfaces, cracks and chips and scuffs on the cylinder walls, as well as burnt-out cylinder head gaskets lead to oil leakage and a drop in its level. Residues of oil burn out or are deposited on parts; it is quite difficult to predict what the consumption will be in this case, it all depends on the degree of wear and damage to the internal combustion engine.
