The 462 engine is injected from the valve chamber cover channeling port is what s going on

1) The hazard of engine blow-by failure.

Power losses increase and fuel consumption increases. Under normal circumstances, the number of gas leaked from the piston and piston ring assembly of high-speed gasoline engine should be less than 1% of the intake volume, and when the blow-by exceeds the specified value, it will cause the power loss to increase and the fuel to rise.

The lubricating oil is deteriorated. Due to the high temperature of the blow-by gas, and the mixed dust and alumina and other substances in the air intake, in addition to accelerating the abrasion of the parts, the viscosity of the oil increases, and the oil color turns black; In addition, when the amount of blow-by gas increases, because the gas is difficult to cool, the oil often evaporates into white smoke and is discharged from the oil pan and oil port.

The part is overheating. Due to the blow-by, the temperature of the piston and piston ring increases, causing the ring groove and the lubricating oil on the ring to ablate and bond. The ring loses its elasticity and becomes stuck or broken, resulting in more failures.

Exacerbate wear and tear on parts. Due to the deterioration of lubrication and the adhesion of the piston rings, the wear of the cylinder and piston and the ring increases, which also exacerbates the early wear and corrosion of other related parts.

Due to the increase in crankcase pressure, oil loss increases, which increases oil consumption.

2) Causes of engine blow-by faults.

The piston ring is aligned, broken or abrasive, and the work fails, resulting in loose sealing with the cylinder and blowing. The opening gap of the piston ring and the side and back clearance are too large and the air is blowing. Bar.

The air filter is not installed properly or the filter is damaged, and a large amount of dust and impurities are sucked into the cylinder to cause wear, resulting in poor cylinder sealing and blow-by.

The bolts of the cylinder head were not tightened according to the standard torque, the cylinder gasket was poorly sealed, and the gas was channeled out of the machine.

The valve is not sealed with the valve seat.

The cooling system is seriously short of water, the temperature rises sharply, the piston is partially adhered to the piston ring and the cylinder liner, and the piston is strained in a large area.

3) Engine blow-by fault phenomenon and diagnosis.

Engine blow-by is a comprehensive fault and is one of the common faults of engines. Engine blow-by is a phenomenon in which the high-temperature and high-pressure expansion gas generated in the cylinder is discharged from the abnormal channel during the work process. Its generation and development seriously threatens the normal operation of the engine, reducing the output power, wasting energy, and damaging the parts and causing accidents.

The phenomenon of blow-by-gas is:

The pressure and temperature at the end of engine cylinder compression, as well as the combustion pressure, decrease, the engine starts difficult, the power is insufficient, and the fuel consumption increases.

When blow-by is severe, the engine cannot be started.

When the sound of gas channeling is serious, similar to knocking on the cylinder, open the oil port cap of the dispenser, and a large amount of gas comes out.

The common parts of engine blow-by are valve chamber cover blow-by, crankcase and oil port blow-by and white smoke. In the event of engine blow-by, first of all, the cylinder pressure gauge is used to check the cylinder pressure cylinder by cylinder, and the pressure difference of each cylinder does not exceed i0% of its average value. When the cylinder pressure is reduced, in order to find out the reason for the reduction, a small amount of fresh engine oil can be injected into the cylinder from the spark plug hole, and then the pressure is re-measured; It is also possible to check the vacuum level of the intake manifold to determine the fault of the engine leakage.

On this basis, the cause of the fault is analyzed, and then the right medicine is prescribed to eliminate it; At the same time, effective measures are taken to prevent the occurrence of such failures.

Probably the engine needs a major overhaul.

Hello, there are generally two reasons for this;

Summary. Hello, dear, I'm honored to answer for you! <>

The reason for the oil filling port after the valve clearance of the 465 engine is that the oil port is not tightly sealed by the piston ring, and the flammable mixture in the engine breaks out through the gap between the piston ring and the cylinder block to the crankcase, and then it will smoke from the valve chamber cover, oil dipstick casing and other places to the outside of the engine.

The oil filler mouth of the 465 engine is leaking after the valve clearance.

Hello, dear, I'm honored to answer for you! <>

The reason for the early bend of the oil filling after the valve clearance of the 465 engine is that the oil port is stuffed by the ridge of the land and the piston ring is not tightly sealed, and the combustible mixture in the engine breaks out through the gap between the piston ring and the cylinder block to the crankcase, and then it will smoke from the valve chamber cover, oil dipstick casing and other places to the outside of the engine.

Solution: Check whether the engine block and cylinder gasket are damaged, and check whether there is water in the fuel tank. 2. Check the car manual, and add the correct gasoline in strict accordance with the manufacturer's regulations.

3. Always check the aging degree of carburetor and other parts. Carburetor cars are different from EFI cars, and they need to be maintained and adjusted frequently. Check the cylinder line every 30,000 kilometers, and check the spark plug every 10,000 kilometers.

The 498 diesel engine from the valve chamber cover exhaust pipe oil can not be ignored, which will seriously cause the engine to pull the cylinder, swa, and even cause the engine to be scrapped. Immediately find a repairer to overhaul and check to rule out the problem, the possible reasons are as follows:

Reason 1: Valve oil seal is damaged Treatment: Check and replace the valve oil seal.

Cause 2: Valve Tube Wear Treatment: Check and replace the valve guide.

Reason 3: Excessive lubrication of oil pan Treatment: Check and change the lubricating oil.

Reason 4: Diesel engine cylinder liner is seriously worn Treatment: Check and replace the cylinder liner.

Reason 5: Diesel engine piston rings are seriously worn Treatment: Check and replace the piston rings.

Reason 6: Diesel engine piston ring tension failure Treatment: Check and replace the piston ring.

Reason 7: Diesel engine turbocharger seal wear is severe Treatment: Check and replace the turbocharger seal assembly (repair kit).

Reason 8: Diesel engine cylinder liner cracked (or rust perforated) Treatment: Check and replace the cylinder liner.

Reason 9: Diesel engine cylinder head cracked (or rust perforated) Treatment: Check and replace the cylinder head.

The situation you describe seems to be caused by the wear and leakage of the cylinder.

The piston and ring of the cylinder are worn, the gap becomes larger, and when the work is done, the high-pressure gas will leak into the oil pan and be discharged through the valve cover outlet pipe (because the oil pan is connected to it).

In addition, the piston ring is counterparted, the piston ring is broken, and the cylinder is pulled, which will cause air leakage.

If the oil quantity is insufficient, the oil will become thinner, and the oil will deteriorate, making the cylinder seal worse and will also leak.

In the event of the above, the engine power will be severely reduced and fuel consumption will increase.

Early maintenance is recommended.

In this case, it may be that the engine oil is burned, check whether there is a problem with the oil seal.

Hello, this is generally a problem then it is a problem of poor sealing.

1. The excessive pressure of the screw of the engine valve cover causes oil leakage due to the deformation of the valve cover of the gas mask, and oil leakage will also occur if the pressure is too small. Heavy Wang new adjustments.

2. The valve chamber cover gasket is aging, resulting in oil leakage due to poor sealing, and it should be replaced in time.

Kai is old-fashionedHope it helps, hopefully!!

The valve cover gasket is damaged or the valve cover is not in contact with the cylinder head.

Smoke situation.

It is usually caused by burning engine oil.

The oil you just changed may not be as viscous as the car, resulting in residue on the cylinder wall. This problem is not big, you open it for a few days first.

Hello, it is recommended that you check the timing, valve clearance.

You'd better first determine whether the four walls of the intake are engine oil, which is not normal under normal circumstances, but the carbon deposits on the four walls are very normal, similar to the carbon deposits of the throttle, thinking that the throttle is the intake.

If you do have a bit of oil stains, don't worry too much, there are two main ways to ventilate the crankcase of the engine:

1.Natural ventilation. Name implies. It's self-arranged. Regardless of whether there is a filter in the line or not. In the end, they are all discharged directly into the atmosphere.

2.Forced ventilation. It is to use the suction action of the engine intake branch pipe to suck the oil and gas (exhaust gas) in the crankcase. oil vapor).Enter the intake manifold to participate in the engine.

The crankcase forced ventilation system, the oil vapor will be sucked into the inlet duct for combustion, which is the small pipe on the ** you see, this is continuous, as long as you drive, the oil vapor will be sucked in.

You just need to pay attention to the oil height, if there is no problem, you don't have to worry too much.

There is oil in the cylinder [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】