Automotive engine overhaul mainly includes replacing valves, pistons, cylinder liners or cylinder boring, shaft grinding, etc. According to the 4S general stores standard, 4 components need to be replaced, namely pistons, piston rings, valves, valve oil seals, valve guides, crankshaft bushings, connecting rod bushings, timing belts and tensioners.
1. Which projects should be reworked?
1. If chain shimming is necessary, the timing chain and tensioner must be replaced. In addition, the machining, lower bore cylinder sleeve, grinding shaft, cold press pipe and overhaul kit need to be replaced. replaced. Front oil seal, rear oil seal, camshaft oil seal, oil pump, valve, etc. Sometimes it is necessary to replace external parts, such as clutch plates, andvs. In short, it is necessary to replace all the parts that are. Not sure if installed. Engine repair ensures engine performance.
2. The mechanical part generally includes a set of intake and exhaust valves, a set of piston rings, a set of 4 cylinder liners (if it is a 4-cylinder engine), two thrust plates , and 4 pistons. ;
3. The cooling system usually mainly includes the water pump (the pump blades are corroded or the hydraulic seal has water seepage), the upper and lower water pipes of the engine, the high circulation iron. water pipes, small circulation pipes and butterfly water pipes (with aging problems). (If it expands, it needs to be replaced), thermostat, etc. ;
The fuel part generally includes the upper and lower oil. injector rings, fuel filter; the ignition part:if the high voltage line is swollen or leaking, replace it and the fire piston; the upper and lower oil rings of the fuel injection nozzle, fuel filter;
< p>4. Ignition Part: Replace the high voltage line if it is swollen or leaking and the piston is on fire;5. The air intake part usually includes the air filters; >6. Other auxiliary materials generally include antifreeze, engine oil, engine oil filter, detergent, engine metal cleaner or all-purpose water
7. Components to be inspected generally include if the cylinder head is corroded; or uneven, crankshaft, camshaft, timing belt tensioner pulley, timing belt adjustment pulley, timing belt, external engine belt and adjustment pulley, rocker arm or rocker arm shaft, if it is 'a hydraulic lifter, please check the hydraulic lifter
8. Pieceof the cooling system: water pump (the pump blades are corroded or the water seal is leaking), the upper and lower water pipes of the engine, the large iron circulation pipes, the small cooling pipe circulation, butterfly water pipe (needs replacement if aged and swollen);
9. Fuel part: The overhaul kit includes cylinder gaskets and various oil seals, valve chamber cover gaskets, valve oil seals, etc. Gaskets and other things;
Engine overhaul projects usually include engine overhaul, cylinder head plane machining, cylinder boring, water tank cleaning, grinding of the valve, cylinder liner insertion, piston pressing, oil circuit cleaning, engine maintenance, generator set maintenance, etc.
2. Parts that must be replaced during engine overhaul
1. Jo setvalve oil ints, a set of intake and exhaust valves, a set of plug rings and a set. of cylinder liner with 4 tappets Two pieces, large and small tiles, 4 plugs,
2. The cooling system usually mainly consists of the water pump (the pump blades are corroded or the hydraulic seal is not leaking)
3. The upper and lower water pipes of the engine, large iron circulation water pipes, small rubber circulation pipes and valve water pipes (need to be replaced if they do not age or shrink) >
4. The fuel part usually includes the upper and lower oil rings of the injector); , and the fuel filter;
5. The ignition part generally includes mainly if the high voltage line has no shrinkage or leakage. If not, replace the spark plug. The air intake part generally mainly includesremove the air filter. .
6. Other auxiliary materials: antifreeze fluid, engine oil; if the cylinder head is corroded or uneven, crankshaft, camshaft, reverse timing belt tensioner, reverse timing belt reset pulley, reverse timing belt, external engine. reset belt and pulley, rocker arm or rocker arm shaft. If it is a hydraulic lifter, please check the hydraulic lifter further. The overhaul kit includes cylinder gaskets and various oil seals, valve cover gaskets, valve oil seals, gaskets, etc.
The anti-theft light of Great Wall Fengjun 5 keeps flashing and cannot turn on
If the fuse on the car dashboard is defective, you need to go to the car 4S store or repair it. store to get the car fuse repaired in time. Replacement can solve the problem of the boardboard of the unresponsive car. Another possible reason is that the dashboard is not responding. There may be a problem with the dashboard or the socket wiring harness. It is recommended to go to a 4S workshop or auto repair shop for inspection and repair to see if the fuse is necessary. To be replaced.
The design of the dashboard seems a bit small. The orange luminous background and white pointers won't be too dazzling at night. The battery is charged but the vehicle cannot start. This symptom can be caused by a blown fuse responsible for starting the engine.
The reason why the meter pointer does not move and the screen does not display
The car dashboard pointer does not move because the signal of speed is lost to display the speed. This also happens. After the battery runs out, contact after-sales personnel to repairparation after 4 seconds. Instruments vary from car to car. But the conventional instruments of ordinary cars include speedometer, tachometer, oil pressure gauge, water temperature gauge, fuel gauge, charge gauge, etc.
It should be noted that when you find that the vehicle cannot start, remember not to turn on continuously. Continuous ignition will cause the battery to continuously discharge and result in an embarrassing situation of total power loss. While the vehicle is moving, the tachometer displays normally, but the speedometer displays zero and the ABS light comes on, indicating that the fuse corresponding to the ABS is blown.
This means that the anti-theft system has not been released. In this case, the car will not start. Secondly, its power consumption is also minimal, so there is no need to worry about any impactt on the vehicle.
If the engine fault light on the dashboard flashes when driving the car, it reminds you that the engine is defective and you should drive carefully and pay attention to maintenance. The car engine failure signal is. sent by the ECU and commands from the ECU. This is all the electronic equipment of the whole engine, such as electronic throttle, fuel injector, generator, fuel pump, etc., covering various systems such as intake, l exhaust, fuel, ignition, timing. , etc., and the engine fault light flashes. The reason is most likely that a certain part of the engine has failed, which is an abnormal phenomenon.
Parking precautions
The front of the car when parkingOutward: parking in a guarded paid parking lot can significantly reduce the risk of vehicle theft. If he isleft unattended, try placing it in a busy area or with the front of the car facing outward. This will increase the psychological burden on the thief when committing the crime, making him afraid to attack easily.
If it is a borrowed bus or car, because you may not know the anti-theft performance of the vehicle, you can use the car distributor disconnect method and the ignition head (of course this is a car with non-electronic ignition). There are no screws in the ignition head. It's fixed and can be removed by pulling it up, but the car definitely won't be able to move without this thing. .
Reference for the content above? Baidu Encyclopedia-Engine Electronic Anti-Theft