In recent years, car owners have gradually increased and cars need regular maintenance. However, some service centers with limited qualifications often go into maintenance pitfalls and affect vehicle performance.
The engine temperature is not afraid of high and low temperature. The water temperature is high to find out the reasons by all means, and the low water temperature is considered normal. In fact, the low water temperature of automobile engines is very harmful and will cause the mixture to burn insufficiently, reduce the power, increase, and cause poor lubrication, and will also cause excessive emissions.
The more oil you add, the better. It is believed that the engine plus engine oil is much more, not less, plus less easy to burn bearings, plus little more relationship. In fact, the addition of engine oil caused damage to the engine. Even the inclined engine and the V-type engine were even worse. It increases the rotational resistance of the crankshaft and the connecting rod, and causes the engine oil splashed on the cylinder wall to increase, resulting in an increase in carbon deposition in the combustion chamber. Therefore, the increase in motor oil will reduce engine power, increase wear, and cause excessive emissions.
Empty hub lubrication is not reliable. It is believed that the hub is stuffed with grease and the lubrication of the hub bearings can be ensured. The empty hubs that only apply grease on the bearings are not safe and must fill the gap in the middle of the hub with grease. In fact, this is not only a waste of grease, but also affect the bearing cooling, the bearing lubrication is harmful and unprofitable.
Breaker contact gaps are better than small ones. In fact, the contact gap is too large and the contact closure time is short, which reduces the current at the primary side of the ignition coil and causes the high-voltage spark to be weak, thus causing the engine not to start.
Do not loosen the fastening bolts. In fact, the bolts of various parts of the car have their corresponding specified values ​​according to the diameter, pitch, and use. Bolts that do not reach the specified value will loosen, which is not good, but blindly increasing the tightening torque will deform the parts that are fastened and cause the screw to elongate and the thread to deform or even break.
It is safe to open the car for maintenance. With the improvement of the manufacturing level, the life of modern auto parts has been greatly extended, and random inspections will inevitably destroy the well-matched mating state, which will greatly shorten the service life of parts. In today's perfection of automobile failure detection technology, if there is no obvious component or assembly failure, do not generally check it.
Sigma Post,Metal Sigma Post,Structural Sigma Post
Unovo Machinery Co., Ltd. , http://www.jsformingmachine.com