SINCE 2004--Professional Auto Diagnostic Factory

1.Temperature Anomalies

The so-called abnormal temperature refers to the temperature of the table by indicating higher than normal(80°~ 90°)or touched with a finger,it will be able to sense Feel-temperature phenomena.Overheating is usually manifested in the engine, transmission assembly,drive axle assembly,brake drum assembly.In Under normal circumstances,no matter how long the car to work,these assemblies should maintain a certain temperature.Addition to the engine,if the hand When you touch these assemblies,feeling hot and unbearable pain,that show where overheating, faulty instructions here. For water temperature gauge indicates the temperature is too high,we can not be taken lightly.Typically the engine to overheat,then the general cooling system failure,if not removed,will Causing sudden explosion,preignition,with weakness,and even cause the piston and other parts of the pillow melting accident.If the transmission, drive axle from overheating,May be the lack of lubrication or bearing installation tightness due to improper adjustment,if not removed,will cause damage to the gears and bearings.

2.Abnormal Odor

The so-called abnormal odor is available nose to sniff the smell is not normal, such as a short circuit, the smell of burning rubber when;cars And,if brake dragging,comes out when the clutch slip fault of the clutch plates,brake shoe smoke focal ablation of;Exhaust pipe smoke flavor, raw greasy,as well as engine overheating,burning when oil or brake fluid,also gives off a special odorWait. For unusual odor can not be taken lightly,especially in the road,once smelled like burning rubber smell when they should standThat pull over,identify the reasons for exclusion,in order to prevent fires.

3.Abnormal Appearance

When the car broke down,the change will be reflected in the appearance. As the car is parked on a flat site, check its shape,If horizontal or vertical skew phenomenon, for the abnormal appearance.It causes abnormal appearance of multi-line car chassis, body, suspension means Home,tires and other unusual,this will lead to the traveling direction of instability, driving wandering,weight shift, uneven tire friction and disadvantages disease.

4.Abnormal Operation

The so-called abnormal operation,refers to abnormal operation of the car and start driving that exist,which is usually talking about working conditions mutation.For example,the engine suddenly after the start-up difficulties,can not even start;the engine difficult to start or not start after running.Stability;dynamic sudden drop in motion, so that cars with weakness; moving suddenly Zhidongshiling or deviation, the steering wheel and the front Round shaking even runaway. Fault symptom motion abnormalities obvious, easy to detect, but the causes of complex and often from Fade to mutation,therefore,must be carefully analyzed before mutation for suspicious symptoms,Quweicunzhen to ascertain the fault lies.

5.Abnormal Color Smoke

Engine operation,combustion products should be the main component of the normal amount of carbon dioxide and water vapor.If the hair Motivation normal combustion,the exhaust gas will be mixed with unburned soot, hydrocarbons,carbon monoxide,or a large quantity of steam.Then the color of the exhaust gas may be black, blue, white,that color is not normal smoke.For gasoline, the normal exhaust there should be no significant smoke. But the cylinder channeling oil, gas blue;incomplete combustion, exhaust black; oil mixed with water exhaust gas white.

6.Abnormal Fuel

Generally refers to the abnormal fuel oil,lubricating oil consumption anomalies.The so-called fuel and oil consumption that is abnormal fuel, lubricating oil It consumes more than its predetermined value.Fuel and oil consumption is also an abnormal failure symptoms. Increased fuel consumption, typically launch Bad work or machine chassis driveline, brake system due to improper adjustment. Excessive oil consumption, in addition to leakage of reasons,Mostly due to the engine failure. Then add oil mouth often accompanied by a lot of smoke or pulsating smoke, exhaust smoke color and irregular,The main reason is the piston and the cylinder wall with the gap is too large or damaged piston ring failure. If the engine operation, the machine Increasing the amount of oil, possibly due to the cooling water to the oil pan caused to penetrate or gasoline. Therefore fuel and oil consumption is abnormal An important symbol of the poor condition of the engine technology.

7.Abnormal Sound

After launching the car or driving due to the operation of mechanical vibration will sound. This sound can be divided into normal and sound Abnormal noise.The so-called normal sound means exist to allow a slight noise,such as:internal engine piston ring and cylinder wall Sound friction sound, oil Jijian sound of the engine when the eruption as well as some other cars permitted during operation sound appears sound. Abnormal noise refers to the abnormal metal percussion,or other undue sound. For example, knock ring, ring pins, bearings sound, the sound of blow-by gas and so on. These abnormal sound exists there is a fault, should be excluded immediately. It should be noted that many abnormal sound mechanical failure will lead to major accidents, and therefore must be taken seriously. Experience has shown that, where the sound heavy, and accompanied by a significant earthquake shaking department of the phenomenon of multiple malignant failure,should immediately pull over, identify the reasons for troubleshooting.Different causes abnormal sound will be associated with different Sound features, such as: the piston and the cylinder gap is too large to produce a loud knock is a crisp and rhythmic "Dangdang" gold Genus percussion; piston pin and connecting rod bushing,or the piston pin pin seat hole with loud rattling produced a shrill rhythmic Similar ball collision "blah" knocking; journal bearing and rod bearing wear Songkuang appears sound is a continuous and rhythmic The "da da" metal percussion; crankshaft bearings and crankshaft journal bearing ring with Songkuang time is kind of continuous and rhythmic "boom Boom "metal percussion; and a cylinder seal deterioration resulting blow the sound is a" chirping "sound when it is judged.You should listen carefully observed, in order to distinguish correctly and quickly ruled out.

In fact,the factors that lead to car trouble is very complex, and some factors that cause of the fault involves a wide,up to several many dozens.These factors sometimes work alone, sometimes alternately comprehensive work, but they are by the gradual transformation to mutation,therefore to do accurately and quickly determine the fault,the driver requires in practice,constantly sum up experience,familiar with the construction and automotive work principle,master the theoretical knowledge of the car.Encountered particular fault,we should first find out the characteristics of the fault,and then from simple to complex,Outside to the inside,and gradually in-depth,carefully check the reasoning and analysis,and finally make the right judgments,and adjust or repair.You can also use the OBD Diagnostic Scanner to detect problems.For example ELM327 and mpm com etc.