Through the exhaust color to determine fault
First, to judge by the color of car exhaust malfunction
Normal exhaust should be colorless, no funny smell, but different colors in different flavors of automobile exhaust is likely to show that the vehicle itself is facing some trouble.
1. Smoke
Performance: the engine shake, exhaust pipe unusual sound issue, while the black smoke emitted body acceleration can feel somewhat powerless.
Cause: The cause of the malfunction resulting smoke more, if it is black smoke that causes carburetor cars is more complex. For example cold start, the spark plugs work well or play a half-day motor to start, this product mixture in the cylinder can not be completely burned naturally there will be emission of black smoke; or wrong vehicle ignition timing advance or wrong may still led to produce black smoke. EFI cars in general very little black smoke, if it cropped up in smoke, that are mostly cylinder body broke down. “Blind cylinder” is the common one.
Approach: carburetor car is now basically been on the age, should always check the carburetor and other parts of the aging degree of carburetor cars is different from the EFI cars, to regular maintenance and adjustment, to develop a good The car habit. EFI car to check the tank every 30,000 kilometers line, check the spark plugs every 10,000 kilometers, there are problems to be promptly replaced.
2. White smoke
Performance: the car, we can see a large number of white smoke, accompanied by steam engine is not running smoothly, even if the engine warm-up is still a large number of normal working temperature of water vapor emitted (except in winter).
Reason: cause the risk of white smoke could be due to the engine cylinder of the cylinder pad wear, have a certain gap, resulting in cooling systems of water poured into the combustion chamber. Water can not burn, the heat generated after the water vapor, emitted directly from the exhaust pipe.
Methods: Check engine block, cylinder cushions have injury, check whether there is water inside the tank. In addition, view the vehicle specifications, in strict accordance with the provisions of manufacturers to add the correct label of gasoline. In addition, the low-temperature heat car will also have a small amount of white exhaust smoke, which is a normal exchange of hot and cold, hot car white smoke disappear naturally.
3. Lanyan
Performance: Vehicle explosive down, feeling powerless to accelerate, the noise become large, blue smoke exhaust pipe discharges, and is accompanied by oil produced by burning coke Hu taste. Ruler at the same time by checking the oil found in oil consumption will be large, under normal circumstances, each maintenance finished, driving 5,000 km, the oil consumption should be within the normal range, no half-way to add.
Reason: Lanyan mostly due to the internal engine failure, causing oil jump into the combustion chamber resulting from common in general there are two situations: First, serious wear and tear. Cylinder walls are scratched, piston seal or a valve at the serious adverse wear and tear, will have a gap, while the original charge of lubricating oil at this time through the gaps and jump into the combustion chamber to participate burning, burning oil that can not be discharged outside the car when it produced a blue – color of the smoke. Second, oil filling is also easily lead to burn excess oil. Some owners mistakenly believe that oil increases the better, but does not know that an excessive amount of oil will also be brought into the cylinder for combustion, resulting in the phenomenon of burning oil. Excessive filling of the oil will block the normal operation of the crank arm, allowed an extra doing work to increase energy consumption.
Approach: on the vehicle age older vehicles should always check the cylinder, piston and other parts of the seal, found Lanyan discharged into the pit stop in time for repairs to prevent further losses; oil added in moderation, too much, too little are not desirable; regularly check the oil use if it is found abnormal oil consumption, immediately to the professional repair station inspections.
Second, abnormal jitter through the car to determine fault
Under normal circumstances jitter of a car engine should be very smooth, regular, if they can obviously feel the car shake than the recent big new car, then you should pay special attention to the.
1. The morning shaking hot car when idling to improve
Performance: In the morning the car engine was worse than normal jitter, but sometimes problems occur once could not be activated.
Cause: There may be too dirty throttle, fuel injectors and intake of too much coke. Cold cases, adsorption of coke will be part of the fuel, fuel combustion, if not completely into the cylinder, it will produce idle instability, difficulty in starting symptoms.
Approach: Cleaning throttle, fuel injectors and intake. However, to remind consumers that the cleaning work can be carried out step by step, first wash to see whether the improved throttle, if the good do not have to clean the rest of those two, and avoid spending more money wasted.
2. High-speed jitter or bounce
Performance: high-speed to a speed limit, the steering wheel will feel significant jitter or jumping, but the low speed was not obvious.
Reason: In fact, jitter problems caused by car there are many here, we must first rule out due to engine failure caused by abnormal jitter, because of engine failure will appear generally low. Car If only high-speed jitter obvious, we can first visual look at the balance of lead weights on the rim if there is missing, or whether the apparent deformation of wheel hub. If the above is no problem for it would have to resort to the local professional test equipment, because the steering rod, suspension and wheels we use the slight deformation of the eye is difficult to discern.
Approach: the use of vehicles for some time, due to collisions, frequent up and down pit road without teeth child or too slow can lead to suspension, shock absorbers, wheel hub accidental deformation, or the ball head, irregular tire wear, basically by adjusting the chassis hanging position, the former beam angle or replacement of tires to resolve.
3, through the drip of the liquid to determine fault car
You have had the morning to look at cars a liquid under a damp experience? If there are not anxious to see if you are the sort of circumstances the following bar.
1. Lubricants
If it is engine oil, gear oil, lubricating oil dripping on the ground, will be able to distinguish with the naked eye. Because this kind of liquid the color of deep, and the paper will immediately stained with the proliferation of what is available there will be faint smell of oil flavor. Oil leak occurs in general are not a small problem, which should arouse enough attention.
2. Gasoline
Gasoline is highly volatile and pungent taste, if the car has gas leakage should be hard to find. However, there are highly volatile due to its characteristics, it is generally difficult to be found in a small amount of drip, basic to rely on smell to identify. The site of gasoline leakage occurs usually in the fuel tank, pipeline connections, or parts of the engine fuel supply system.
3. Water
Open the air conditioner in summer, due to hot and cold air-conditioning system to conduct the exchange, so there are a number of colorless, odorless water dripping down is normal, but determined not to leak engine coolant, etc., but also to close the air immediately after the dripping phenomenon will disappear.
4. Cooling fluid
If the engine coolant (also known as antifreeze) it leaks, usually occurs in the upper and lower water tanks at the water hose, water tanks or water tanks and other locations, as long as not particularly serious, basically can make it to the maintenance station further repairs However, the car leaking coolant temperature should be directed at any time detection instrument, there is a strange stop immediately.
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