The engine can t start How to judge if it is a timing belt failure

A faulty belt will not cause the engine to fail to start.

If the engine starting speed is low (less than 150 rpm), check the engine starting speed.

The engine drive engages and disengages the engine drive.

The fuel filter is clogged, replace the fuel filter.

The fuel suction line is blocked, check the fuel line.

When the engine compartment cover is opened, the timing belt slips and the timing belt is faulty. Hope mine can help you.

Today's cars generally turn on the engine can not directly see the timing belt, generally more than 60,000 to start paying attention, 90,000 to change is not a big problem, or more than 5 years to start to replace, the replacement of the belt, it looks like there is no problem, do not change it, there is no bottom in the heart. If you can see the aging cracks in the belt or something, I estimate that it will be more than 150,000 kilometers, hehe, I guess. Therefore, it is generally undetectable.

Have you checked all the other reasons?

If the engine timing is not right, it will cause the engine to start difficult, the vehicle will not have enough power, and the vehicle will shake when idling, which will seriously cause the valve and piston to collide with each other, resulting in damage to the valve and piston. At this time, the engine will not work, and the engine will need to be overhauled.

The ignition timing of the gasoline engine is the key to the combustion of the fuel, and the correct ignition timing is not only conducive to the complete combustion of the fuel, but also gives full play to the thermal efficiency, ensures the normal play of the engine power, and makes it output the maximum effective power; It can also effectively avoid a series of failures such as piston roof burning, ring breakage, cylinder pulling, and power decline caused by engine detonation.

Symptoms of the phenomenon of inaccurate ignition timing:

1. Ignition is too early.

If the mixture is burned too early, it is easy to produce sudden explosion and affect the normal combustion. When the engine is running, when you suddenly increase the throttle, there will be a cluck"The sound of metal knocking and even damage to the mechanism.

There is also a knocking sound at idle ignition, the sound is not loud, if the distributor shell is slightly twisted in the direction of rotation of the fire splitter, the sound is reduced or disappears, and the ignition time is too early. When the engine crankshaft is shaken with a hand crankshaft, there is a reversal (anti-electric) phenomenon. When using the starter, the resistance is high, and the engine is difficult to rotate.

Second, ignition knowledge.

Reduces the pressure of the gas on the piston, resulting in a decrease in power. The engine is weak, stuffy, and the speed cannot be increased when the throttle is increased; Uneven operation at high speeds. The ignition time is too late, the carburetor is tempered, the muffler is discharged, the engine temperature rises, the fuel consumption increases, and the engine starts difficult.

3. The ignition time is out of order.

The engine has a shaking and knocking sound, a lack of power, carburetor tempering, and exhaust pipe discharge. It doesn't even start and work at all. When the vehicle encounters the above phenomenon, it is generally necessary to check and calibrate the ignition timing, and adjust the contact clearance according to the specification.

If the valve timing is not right, it will not be easy to start the car, and the idle speed may be normal after barely starting, but the throttle (engine speed) cannot be added. The heavier one cannot start, the engine cannot rotate, and the piston is pressed against the valve.

All the main parts and accessories of the engine are installed inside and outside, and are subjected to various loads. Therefore, the body must have sufficient strength and rigidity. The body group is mainly composed of parts such as cylinder block, cylinder liner, cylinder head and cylinder gasket.

The cylinder block should have sufficient strength and rigidity, and the cylinder block is usually divided into the following three forms according to the position of the cylinder block and the oil pan mounting plane.

When the engine is not aligned, there will be a lack of power, and in severe cases, the valve may be pushed up.

It will cause the engine top cylinder head to need to be overhauled.

Hello, Improper timing will cause backspray or high heat of the exhaust pipe to the machine, which will seriously affect the power, serious timing error, valve and piston collision, valve deformation and bending, piston being broken, etc.!

Very simple! The ignition time is wrong, resulting in insufficient power and high fuel consumption of the vehicle!

Hello It depends on how many teeth you jump, if you only jump one, it doesn't feel big, the main thing is that the refueling will not feel as powerful as before, and the sound will be a little dull. Two teeth or more will obviously feel the engine shake badly, jump too much and you can't get on the car at all, and it may also break the valve If it helps, please adopt Thank you.

If something is wrong, then there is a possibility of backfire, the car cannot be started, and in serious cases, the valve can be pushed up.

I'm going to fix this.

If the timing chain is damaged, the valve mechanism of the car engine will not be able to operate normallyThis will affect the engine from starting. If the timing chain is damaged, it needs to be replaced immediately, otherwise it will affect your own car. The valve train of the automobile engine is very important.

Most of the engines of automobiles will basically use the overhead camshaft design, and each row of cylinders basically has two camshafts, one camshaft function is to adjust the intake valve, and the other camshaft function is to adjust the exhaust valve.

The engine is in the suction stroke.

The intake valves open so that the sub-engine can draw in air or a combustible mixture. When the engine is in the compression stroke and power stroke, the intake and exhaust valves are basically closed.

When the engine is in the exhaust stroke, the exhaust valve opens so that the exhaust gases caused by combustion in the sub-cylinders can be discharged. Some engines will use timing chains, and some will use timing belts. Engines that use timing belts turn less noise.

The symptoms of engine mistiming are as follows:

1. If the timing of the car is not correct, it will cause the vehicle to be underpowered, and the vehicle will shake when idling, which will cause the valve and piston of the engine to hit each other, resulting in engine damage;

2. The timing belt is to connect the camshaft and the crankshaft, control the opening and closing of the valve, control the rotation of the crankshaft and the up and down movement of the piston. So if the timing belt is not aligned, it will cause the valve to open and close at the wrong time;

3. The time of the piston reciprocating up and down is wrong, which will lead to insufficient power and shaking of the vehicle, and will cause the valve and piston to hit each other, resulting in damage to the valve and piston. At this time, the engine will not work, and the engine will need to be overhauled.

Hello! It will cause abnormal engine noise, impact the valve, and the engine working cycle will be disordered, resulting in engine component failure. Although the timing chain is maintenance-free, we also need to carry out maintenance, 150,000 kilometers of inspection.

200,000 km for replacement. After a long time of high torque and high speed operation, the chain will be weakened, and the chain will be elongated, so that the timing will be out of order, hit the valve, and cause the engine work cycle to be disordered and cause engine failure.

Hope it helps!

1. If the ignition is too early, it is easy to detonate, which is the sound of the rod. In severe cases, mechanical accidents may occur. The intake manifold is tempered. Over time, there will be serious carbon deposition, which will not be talked about later;

2. If the ignition is too late, there will be gunning, weakness, increased fuel consumption, and even black smoke, the above phenomenon is a direct phenomenon when the fire is not right, and there will be related problems after a long time;

3. Therefore, the timing alignment of the engine assembly will have a great impact on the power, economy and emission of the car.

Hello, if the engine timing is not right, it will not start, and in serious cases, the valve will be broken.

If the car has just been overhauled, will the chain not be installed and can't stand it just after getting started, just kick a few feet to warm up.

1) Find and verify the top dead center mark and ignition advance angle mark of 1 cylinder compression on the flywheel or crankshaft front end pulley, wipe it to make it clearly visible, if the mark is not clear, it is best to use chalk or paint to mark the mark white.

2) Connect the ignition timing instrument to the car engine correctly according to the diagram, unplug the vacuum hose of the vacuum adjustment device, start the engine, and make the oil temperature rise to more than 60.

3) keep the carburetor choke fully open, observe the engine speed displayed by the instrument, keep it idling, and the ignition advance angle displayed by the instrument at this time is the initial ignition advance angle, which should be 6; 1°；；If it does not meet the requirements, it should be adjusted. If the ignition timing lamp is used for inspection, the top dead center sensor should be removed, the timing lamp should be aimed at the observation hole of the flywheel housing, and the resistance should be adjusted, and the advance angle can be measured when the fixed mark (on the housing) and the rotary mark (on the flywheel) coincide.

There was a burst of sound at 800 rpm

What do you mean? Whether it is a flat belt or a V-belt, what happens when it is running,

The phenomenon that the timing belt is not installed properly is: it will cause the belt to break, or the gear is worn, resulting in the engine stalling.

If the timing belt is not aligned, it will cause the engine to not work normally, resulting in early or late ignition, abnormal engine noise, power decrease, fuel consumption and other phenomena. In severe cases, it will break the valve or damage the piston, causing damage to engine components and shortening the service life of the engine.

The function of the timing belt is to connect the upper and lower, and the upper connection is the timing wheel of the engine cylinder head, and the lower connection is the crankshaft timing wheel; The timing wheel is connected to a camshaft, and there is a cam on this camshaft, and the contact point is a small rocker arm, and the rocker arm generates pressure through the power brought by the timing belt and plays the role of jacking;

Hello, if the timing belt is not installed well, there will generally be a bad start, after starting, the power is insufficient, the gas pedrotal car responds slowly, and the car with VVT will also protect the fault code, I am happy to answer for you!

Good evening, if the timing belt is not installed properly, a slight misalignment will cause engine stagnation, weak starting, shaking, increased fuel consumption, intake manifold discharge, and if the misalignment is severe, it will push the valve.

Hello, if the timing belt is not installed, it will cause the vehicle to fail to start or difficult to start, there will be trembling after starting, and if the gap is relatively large, it is easy to damage the engine's valves and connecting rods.

Hello, if the timing belt is installed in an improper position, it is easy to cause difficulty in starting the vehicle. In severe cases, it can even cause the top of the valve to hit the piston.

Hello, there are also cases where one tooth is missing, and it can be started, but it is boring and not easy to start. But most of them can't be activated. If there is a large difference in the timing of the pulley, if the car is forced to start, the valve and piston parts will be pushed up.

Hello In this case like you said, if the timing belt is not installed properly, there is a possibility that the belt wears out the skipping teeth and the top valve damages the engine.

The car that just started is like this, like I drive the T70, start the speed to 2100 rpm every day, wait for about 3 minutes each time, and the speed slowly drops to 1100, and then drive.

Hello, it will be difficult or unable to start, and in severe cases, it will cause the top valve and the camshaft to be broken.

Fault symptoms that often occur in the timing belt of the automobile engine: 1. Slight (small deviation) will cause the car to be weak, and the uphill slope can not be refueled; 2. No matter how serious it is, there is no idling, or the engine is seriously shaking in the idle state, and the exhaust pipe makes a blasting sound when refueling, and occasionally there is a refueling death fire accompanied by the blasting sound; 3. The car is driving in the process of sudden idle unstable, easy to stall, the most important thing is that the accelerator is not smooth, acceleration is weak, when this problem occurs, if you rule out the throttle and other circuit components failure, then you have to think about whether there is a problem with the timing, or sooner or later whether the teeth jump; 4. The engine suddenly stalls in the process of driving, if the starter speed is very high when the engine is re-ignited, and the silver travel feels that there is no compression, then there is only one situation when the belt is broken (especially for older cars); 5. When accelerating, the engine tensioner has an abnormal sound, or you must pay attention to the abnormal sound of the engine pulley, the external belt does not matter, if it is the inner belt, the problem is not small.

Symptoms when the timing belt is about to be broken: 1. Slight damage (small deviation), the car will be weak, and the uphill cannot be refueled. 2. Serious damage (large deviation), the base is not idling, or the engine is seriously shaking in the idle state, the exhaust pipe makes a blasting sound when refueling, and occasionally accompanied by the blasting sound, the phenomenon of stool pure refueling and dead fire occurs.

3. The car is driving in the process of sudden unstable idling, easy to stall, the most important thing is that the accelerator is not smooth, acceleration is weak, when these problems occur, if the throttle and other circuit components are excluded, then it is necessary to consider whether it is a timing belt problem. 4. The engine suddenly stalls during driving, if you hear the high speed of the starter when you re-ignite and feel that there is no compression, then there is only one case when the belt is broken. Additional Information:

The timing belt is generally replaced at 60,000 kilometers, and a timing belt is replaced at a time, and it is usually necessary to replace the tensioner and idler pulley at the same time. If the belt is cracked or tooth loss, it is recommended to replace it immediately.

However, this fault code is usually caused by the misalignment of the timing teeth, because the camshaft position sensor is usually only responsible for the initial ignition advance angle, if the camshaft position sensor fails to exit, the control unit switches to the crankshaft position sensor signal in terms of ignition advance signal after the engine starts, and the engine can start, but the start time is delayed back by about .

The camshaft position sensor is neither responsible for idle stability nor acceleration control, so the camshaft position sensor should have nothing to do with excessive exhaust emissions, decreased power performance, acceleration with a car feel, and increased fuel consumption.

In addition, the crankshaft position sensor is mainly responsible for providing the ignition advance angle signal and the engine speed signal, and the impact on exhaust emissions, power and fuel consumption is not very large.

The camshaft position sensor is mainly responsible for providing the ignition advance angle signal, and the ignition advance angle problem (such as timing with a tooth difference) will affect the initial ignition advance angle, and the timing with a tooth is a mechanical fault, and the self-diagnosis system cannot directly leave the timing belt fault code.

The ignition time of the car is too early, which means that the engine is not easy to start because the ignition timing of the car is not right or the ignition system is faulty, and the ignition angle is too early, and the early ignition will lead to an obvious knocking sound when the engine is operating normally.

The ignition time of the car is too early, which will cause the piston upward resistance to become larger, so that the power and torsion resistance of the engine will decrease, the car will be unstable and shaky at idling, the starter will run hard when starting the engine, and there will be a sense of frustration, the throttle will be extracted slowly after starting, and there will be a sharp knocking sound when refueling, and the power will be seriously insufficient, so that the operation can not reach the highest speed at all, and the fuel consumption will be increased. If the ignition time is too early, the ignition timing can be adjusted and the ignition system can be checked. For fixed-angle ignition engines, premature or late ignition will have a negative effect on the engine, but it can also be adjusted according to actual needs:

Urban short-distance low-speed driving can be appropriately selected a larger advance angle, at this time can improve the fuel economy, but if you want to drive at high speed for a long time, you should choose a slightly smaller advance angle.