Car engine oil leakage is one of the common faults, many car owners in the discovery of engine oil leakage will be very nervous this is a very common fault, and any one of the cars may leak oil. But when the engine oil leakage occurs, what should we do? Today we talk about engine oil leakage, to understand the hazards and causes of engine oil leakage, and how we should do it ourselves to check the judgment.
What are the dangers of engine oil leaks?
The main danger of engine oil leakage is the loss of oil, resulting in waste, which may lead to serious oil shortage and thus lead to engine damage. It is not caused by oil leakage, but by insufficient oil pressure after leakage, so just pay close attention to the oil level. Since most cars have an oil level display, it avoids unknowingly lower-than-normal oil levels, and there is also a warning light for insufficient oil pressure.
Engine oil leakage and engine oil seepage are two different concepts
Engine oil seepage
The phenomenon of oil seepage is not easy to find by the owner, generally, the owner goes to the 4s store for maintenance of the car, and the repair of the mechanic in the offer will explain the situation of the car. The owner of the car each time to wash the car, and opens the front hood to simply check the engine condition, if the engine which part of thick sludge, it shows that this place oil seepage, and the specific repair needs to at the situation of oil seepage.
Engine oil leakage
An engine oil leak would be very obvious, and if you get up one morning to drive and find a puddle of black liquid under your car with a very pungent odor, you can tell that it’s an engine oil leak (other systems are also possible).
Causes of engine oil leakage
Oil leakage caused by damaged parts
- Damaged oil pan gasket or loose screws leaking oil.
- Damaged oil pan oil drain plug gasket, leakage or loose oil leakage.
- Improper assembly of timing gear cover gasket, damage or screws loose oil leakage.
- Engine bracket plate deformation or gasket sealing oil leakage.
- The valve cover liner sealing oil leakage.
- Crankshaft front oil seal damage oil leakage.
- Crankshaft rear oil seal damage oil leakage.
- The crankshaft rear-end oil return threads are clogged with dirt and oil leakage.
- The camshaft bearing rear seal cover is not tight oil leakage.
- Rocker arm chamber cover or picket rod chamber cover is not tight oil leakage.
- The oil radiator seal is not tight with oil leakage.
- The oil filter seal is not tight and oil leakage.
- The distributor shell mounting holes are not tightly sealed for oil leakage.
- Oil pump liner damage or screws loose oil leakage.
The main problems associated with automotive engine oil leaks and parts and workmanship:
- Poor quality, material, or workmanship of products (fittings).
- Improper assembly, with the surface not clean, liner damage, displacement, or not by the operating procedures for the installation of norms.
- Uneven tightening force of the fastening nut, slip wire broken buckle or loose off and so on, leading to work failure.
- Sealing materials after long-term use of wear and tear over the limit, aging and deterioration, deformation and failure.
- Add too much lubricating oil, the oil level is too high or add the wrong oil.
- The parts (side cover type, thin-walled parts) joint surface deflection deformation, and shell damage, so that the lubricant seepage.
- Ventilation plugs and check valves are blocked, due to the role of the air pressure difference between the inside and outside of the case, often causing oil leakage at the sealing weakness.
As you can see from the above facts, engine oil leakage is one of the common failures of automobiles, and parts and accessories can cause this failure.
The possible parts of the engine oil leakage and treatment.
- Valve cover oil leakage. The car with a length of 5 years or so is more frequent, you need to replace the valve cover gasket.
- Oil leakage at the engine timing cover. Remove the engine timing cover and re-gluing can be done.
- The oil pan oil drain screw is loose or damaged. Tighten or replace the oil drain screw.
- The oil drain screw gasket is not changed for a long time. Oil drain screw gasket plays a certain role in sealing, this gasket is best according to the maintenance cycle for regular replacement.
- Oil filter element leakage. For example, if the oil filter element installation is too loose or too tight, or the use of a poor-quality oil filter element can only be replaced with a new oil filter element.
- Engine oil pan leakage. Oil pan gasket aging, need to disassemble the oil pan, replace the oil pan gasket, and re-gluing.
- Crankshaft oil seal leakage. Replace the crankshaft oil seal, this operation is more troublesome, need to remove a lot of things, the labor cost is also higher. If the leakage is not serious (such as oil seepage) can choose not to repair it.
The above list is only a relatively common part of the fault, the specific fault also needs to be combined with the oil leakage parts and then further analysis. In addition, it should be noted that the analysis must be judged, for example, some people say that the engine oil leakage may be the steering power pump leakage, and so on. In the treatment of oil leakage failure, finding the oil leakage point is the key.
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