Teach you a few strokes to distinguish true and false engine fault method
When driving a vehicle, when the engine failure or body abnormal sound, the car body shaking situation, you will choose to go to the garage repair? The following are the most common problems of the engine, as well as the common engine failure phenomena and determination methods, understanding will not be trapped into the maintenance trap.
A fault phenomenon: the automobile engine oil appears excessive consumption phenomenon is what reason?
Fault determination: true fault.
Online repair: too much oil consumption is usually the following reason: oil into the combustion chamber to participate in combustion and oil leakage. The oil can run into the combustion chamber, mainly because of severe wear, excessive clearance, or excessive oil pressure in the engine components. And the oil leakage is mainly because the sealing pad hardens, aging valve stuck. In general the old older vehicles, there will be gasket aging and sealed and lax circumstance. There are also normal consumption of lubricating oil in the condition is good, but only in poor condition when the automobile exhaust will be discharged smoke, which means that the lubricating oil consumption is too large. Usually the vehicle 10 thousand kilometers the normal loss of oil quantity should be less than 1L. The general car's oil capacity is about 4L, when the oil level reaches the oil dipstick marking MIN, the oil is missing, but 0.5-1L. If the vehicle is within ten thousand kilometers of oil loss within 1L, it is a normal loss, it can not be considered as a fault.
Approach: the failure of the above, in a timely manner to the garage for repairs.
Two, fault phenomenon: Recently, suddenly feel the engine noise becomes bigger, when stepping on the accelerator, it will send "hump, hump" loud abnormal sound, car body will have obvious vibration feeling.
Fault determination: using class failures.
Online auto repair: the vehicle lifting up, observe the engine bottom plate whether Kepeng traces. In the bottom plate deformation is usually severe bump, cause bottom plate and oil pan is too close, when stepping on the accelerator when the contact, resulting in abnormal noise and vibration of the body will appear.
Processing method: remove engine guard board for flattening and restoration.
Car weapon: when the road bumps or have larger obstacles, must be careful driving, avoid bumpy road, to prevent car bottom dragging.
Three, fault phenomenon: the engine cold start difficult, after starting the engine vibration, a moment can be recovered smoothly, but if the low speed when the engine is still in high speed jitter, but it disappeared.
Fault determination: true fault.
Online car repair: usually this is a spark plug fault, if it is not a spark plug fault, you can determine the ignition time is too early. If the ignition time is too early, the engine combustion chamber deflagration, leading to the engine in the medium speed or low speed driving will shake very seriously.
Processing method: normally, the service life of spark plug is 15000 kilometers, and the service life of long lasting spark plug is not more than 30000 kilometers. However, many owners of the spark plug often appear such problems, can not reach its normal service life. The above fault, should be timely to the garage for repairs.
Four, fault phenomenon: the engine does not run smoothly, often there is a sudden burst, "the voice of stepping on the accelerator when the engine will power shortage, sometimes issued" Peng Peng, "which is similar to the sound of shooting, the exhaust pipe will be black smoke.
Fault determination: true fault.
Online car repair: it may be the ignition time is too late, the combustion chamber pressure is not high, resulting in engine power decline. Some of the combustion expansion of the mixture produced tempering phenomenon, it will send a strong "Peng Peng" sound, while burning incomplete mixture of smoke from the exhaust pipe smoke.
Treatment methods: failure of the above, to timely repair factory repair.
Five, fault phenomenon: in the normal driving car, suddenly appear engine temperature is too high, water temperature display will reach 100 degrees, is this normal?
Fault determination: true fault.
Online auto repair: if the water temperature gauge shows that the temperature will reach 100 centigrade scale position, the engine power will decrease obviously after filling coolant, which indicates that the engine mechanical system is out of order.
Treatment methods: the causes of such failures are: serious Water Leakage cooling water jacket and cylinder gasket; contact damage; thermostat main valve off; fan belt loosening or fracture; pump shaft and impeller loose; fan clutch bad etc.. The faults happen, timely to the garage for repairs.
Car weapon: in the hot summer, the engine has become the most easy "fever" components, driving should always pay attention to the water temperature indicator readings, not more than 95 degrees. In special circumstances, in order to strengthen the convection of cooling air, the engine hood can be lifted to facilitate ventilation and heat dissipation.
Six, fault phenomenon: the engine oil has just been replaced, not long, the results found black in the inspection, what is the reason?
Fault diagnosis: false fault.
Online repair: Oil blackening is mainly due to two reasons: the first is due to the role of detergent dispersant, followed by the use of the engine oil is oxidized. If the oil is not black in use, it shows that the oil does not play its normal role in cleaning. At present, the engine oil usually contains detergent dispersant, absorbs the carbon and iron oxide produced by combustion, so as to remove the oil when changing oil, so as to ensure the cleanliness of the engine. Therefore, the oil has just changed black, not necessarily due to the internal dirty engine, as long as the prescribed time to change oil.
Weapon: car must be scheduled to change the oil and oil filter (or oil filter). When the oil is used for a period of time, the viscosity of the oil is thickened and acidic products are produced. If the engine is replaced irregularly, it will damage the engine parts and affect the normal operation of the engine. In general, cars often use 7500 kilometers of oil filter should be replaced, often running in dusty, bad conditions of the road vehicles should be changed every 5000 kilometers.
Seven, fault phenomenon: compared with my friends, although driving the same brand of car, the purchase time is almost the same, why my car will be much higher than other people's car fuel consumption?
Fault determination: false fault.
Online car repair: first of all to be clear, although the same brand of vehicles, but the use of vehicles in different environments and conditions, the actual fuel consumption will be different, and even a big difference. Driving than driving on the flat and smooth pavement costs of oil on the uneven steep winding road; in the sand soil pavement than driving on the road for oily Cypress oil; some in the crowded downtown area than in the suburb traveling fuel consumption; secondly, different people in different ways of driving, the car ride number of different car. The load weight is different, also have large differences in fuel consumption.
Car weapon: in fact, pay more attention to vehicle maintenance, avoid Jicha driving, learn the right shift, to maintain a reasonable tire pressure, clean up the trunk reduce vehicle weight, choose a reasonable traffic line, use less power consumption equipment, these measures can reduce the fuel consumption of the vehicle.
Eighth, fault phenomenon: car idle speed is too low, I is not stable, go to the 4S store check, prompting me to cleaning solar term door, and the fee is not low, it is because of dirty idle in the car door solar term of natural aging low or really need cleaning?
Fault determination: true fault.
Online car repair: at present, the idle speed of the car is controlled by the idle step motor installed in the throttle body. When the engine is running, because the air quality or the quality of gasoline and other reasons, the throttle valve and the valve will cause the engine idle speed of the door body will slowly solar term deposition of dirt, when dirt is serious, the engine idle speed too low, there will be no idling or poor stability, the gas valve has the phenomenon of issuing season.
Handling methods: Generally speaking, the car should clean the throttle body at about twenty thousand kilometers per vehicle.
Nine, fault phenomenon: vehicle engine jitter is very serious situation, and sometimes failure indicator light flashing, should I go to repair the car?
Fault determination: false fault.
Online car repair: some of the car's engine will have this situation, engine jitter is very serious, engine failure indicator light flashing. Many people suspect that there is a quality problem, and the real reason is the pollution or blockage of the fuel system caused by unclean fuel. The current advanced technology vehicles equipped with exhaust emission monitoring system can detect emissions and clean fuel, so if the use of dirty fuel can cause the engine fault indicator lights flashing and engine jitter.
Treatment method: thoroughly clean contaminated oil supply system, continue to add qualified gasoline, and then add appropriate oil cleaning agent, this situation if improved, you can eliminate the fault
The heart of the car engine, accompanied by an increase in vehicle travel and vehicle age, heart aging is a normal phenomenon, need to pay attention to is the older cars should pay more attention to the daily inspection and maintenance of the engine more than a new car, but the abnormal sound or abnormal driving, but also to do the following routine inspection and judgment:
1. check the engine compartment directly check: engine and accessories have no oil, dust, especially the cylinder block and cylinder head joint, oil filter interface, air conditioning compressor, power steering pump and drive shaft with cracks without leakage.
The consumption of 2.: check the oil dipstick out, see the feet on oil is clean and bright, the amount of oil should be in scale between two.
3. check the bottom of engine compartment: whether the engine guard plate is in good condition, such as the original car without guard plate can be considered to install
4. check coolant and brake fluid: is the liquid level between the maximum and minimum scales?.
5. check engine running condition: cold car start time is not more than 5 seconds, ignition one or two times can start. After starting, the engine speed is steady, not shaking, no noise. When driving a vehicle, when the engine failure or body abnormal sound, the car body shaking situation, you will choose to go to the garage repair? Xiaobian compiled the net friend to the majority of the owners of the recruit, the following are the most easily committed problems of the engine, understanding will not be trapped into the maintenance trap.
