Vehicle maintenance There are some errors in. These errors are the low level of automobile manufacturing, automobile repair process behind the lack of testing means the era of evolving. In recent years, with the rapid scientific and technological Developing With new materials, new technologies, widespread use of new technology, automotive design and manufacture improved significantly Auto Fault Non-disintegration of detection and diagnosis technology maturity, car repair process are constantly updated. However, people's understanding of science and technology lag in the development of vehicle maintenance in the remaining errors are greatly affected its performance mainly in the following 10 species: Related Reading: Top Experts Return Weapon vehicle repair and maintenance problems to solve Save money, save the four major car repair and maintenance costs scheme
A. sliding bearing bush to be scraped. That the engine's crankshaft bearings, connecting rod bearing bush to be scraped when new ones do not cut bearing can not guarantee a good contact surface, bearing even scrape the top as auto repair technology. And Modern Cars, especially small engines, the crankshaft bearings and connecting rod bearings on the bearing of the wear-resistant alloy coating is thin and not allow scrapers and can only press the corresponding size-matching. If no suitable size of the song bearing the necessary basic hole system, the method can be used crankshaft grinding to obtain the appropriate clearance should.
B. engine water temperature low fear high fear. Do everything possible to find the cause of high water temperature, while the low temperature is considered normal. In fact, modern car engine water temperature low against great cause burning mixture insufficient, power down, Fuel consumption Increase, resulting in poor lubrication, also cause excessive emissions.
C. valve clearance bigger than the dot You Jin. In fact, a large valve clearance, valve lift is small, not opening, the inlet exhaust gas shortage or poor, just reduce the engine power.
D. Canada Engine oil The more the better. That the engines do not add oil rather more than less, add less easy to burn bearings, want to add little to do with points. In fact, adding in the engine oil still harmful, ramp-mounted engines and V-type engine is even worse. It is an increase of the crankshaft, connecting rod of the rotational resistance, but also to splash more oil to the cylinder wall on, resulting in increased coke combustion chamber. So, want to add oil, and will reduce engine power, increase Wear and tear Will cause excessive emissions.
E. air hub lubrication unreliable. Full of grease inside the wheel hub that can ensure the lubrication of wheel bearings, bearings coated with profit only in the air hub lubricating grease is not insurance, and must fill the gap of the middle wheel grease. Actually, this is not only a waste of grease and bearing cooling effect on the bearing lubrication detrimental.
F. Brake Good or bad to see towing. Note braking India has locking wheels, and precisely the requirements of modern cars can not locking the wheels, anti-lock device installed for this purpose. In fact the maximum wheel braking force is in the piping side of the wheel before locking slide (slip rate of 20%) state. Once the locking wheel, car steering failure, wheel slip, easy to failure, it is not towing, the better.
G. contact breaker point gap big points better than small. In fact, contact gap is too large, the contact closure time is short, so that one side of the ignition coil current decreases, causing high-voltage spark weak, causing the engine difficult to start.
H. ignition timing or fuel injection timing in the large not to small. Ignition timing (or fuel injection timing) is too large, easy to detonate fuel (especially in the engine hard acceleration or car started, uphill). Engine knock generated on the piston devastating, seriously affecting their life, and start the engine resistance increases.
I. Do not tighten the bolts loose rather tight. In fact, the bolts of motor vehicle parts, according to the diameter, pitch and uses the size of its tightening torque values have corresponding regulations. Not reach specified value will be loose bolts, of course not good, but the blind will be increased tightening torque fastening parts deformation and elongation caused screw, thread deformation and even fracture.
J. car maintenance check before open assured. Increase as the manufacturing level, modern life has been greatly extended auto parts, free running dismantling will disrupt the already good with the state, so that part of life greatly reduced. The disintegration of the automotive fault detection technology is not perfected, if you do not find parts or assembly obvious failure generally spoil the review.
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