FUNCTIONAL PURPOSE OF THE TIMING CHAIN
The Nissan Note timing chain drive is part of the gas distribution mechanism and is involved in the transmission of torque from the crankshaft to the camshaft. The chain can connect them directly or participate in the work indirectly, for example, combining camshafts with each other, if there are two of them, while its functional purpose remains unchanged.
Monitoring the condition of the timing chain, replacing dampers and tensioners, is part of the scheduled maintenance of the car and plays an important role in the operation of the vehicle engine. It is necessary to monitor the condition of the gas distribution system regularly, as this directly affects the vehicle's power, gas supply sensitivity and fuel consumption.
CHAIN REPLACEMENT FEATURES
In most engines of older car models, chains with roller links were used to transmit torque, often the components went in two or three rows, this made the timing chain a very reliable, almost eternal mechanism that did not need constant maintenance. Often the car passed up to 300,000 km. and the chain of the mechanism received only lateral play, and the worst thing that could happen to the gas distribution mechanism was the jumping of links, breaks were extremely rare. Over time, the trend in the creation of cars has become the production price, economy, environmental friendliness and the weight of the car's engine, which affects its power. Under these conditions, manufacturers began to strive to replace the timing chain with a lighter, cheaper and easier to maintain timing belt. And those motors in the design of which the chains were preserved, the roller components were replaced with light plate links, more reliable than timing belts, but still not as strong as roller chains.
The Nissan Note timing chain has a number of features that radically distinguish it from the timing belt.
1. The chain is a durable mechanism, it wears out much longer than the timing belt, breaks occur, but much less often than for belt-driven engines.
2. An open circuit of the gas distribution mechanism occurs quite rarely, which means that an engine breakdown that requires an expensive overhaul does not occur often.
3. Timing chains are quite noisy, but with the current level of car sound insulation, this parameter becomes not very important.
4. When the chain wears out, its backlash and transverse runout occur, this indicates the need to replace the old chain with a new one. Since the metal part, sagging and transverse beating is accompanied by strong noise, it is simply impossible not to notice and attach importance to which. Noise under the hood will be the first "call" indicating the need for vehicle maintenance.
5. The main disadvantage of replacing the Nissan Note timing chain is that it is located inside the cylinder block and it is quite difficult to assess its condition without training and experience. In addition, dismantling and replacement, with such a device, is a long and laborious process, and therefore expensive.
6. Tensioners and dampers are involved in the operation of the timing chain - these are consumable parts that wear out quickly and need more frequent replacements than the timing chain itself.
TYPES OF FAULTS
1. For timing chains, with full serviceability, a natural course is observed, which is compensated by tensioners when oil pressure is applied. A malfunction is considered to be a strong lateral runout of the timing chain, which appears when the links are stretched. It is possible to determine the actual degree of chain stretching only with a qualified inspection of the gas distribution mechanism.
2. Backlash - this is a direct stretching of the chain, which is observed during prolonged operation, can lead to jumping of the chain links and failure of the gas distribution mechanism, this leads to a decrease in the sensitivity of the motor when the gas pedal is pressed and an increase in fuel consumption.
3. An open timing chain Nissan Note - is the most dangerous damage to the engine, in the case of a chain drive of the motor it is not common, but it does happen. In the event of such a malfunction, the camshaft ceases to be connected to the crankshaft and can stop completely arbitrarily in a position in which any of the valves of the gas distribution mechanism is open. In this case, the piston, moving up, may collide with the valve, which will lead to its deformation and the car engine will face serious repairs. It should be noted that an open timing chain does not occur unexpectedly, it is almost always accompanied by changes in the operation of the vehicle, a decrease in its power, a change in gasoline consumption and the occurrence of extraneous noise.
To prevent and prevent the operation of the gas distribution mechanism, it is necessary to periodically troubleshoot the timing chain, this will save the car engine from breakdown, prevent premature engine wear and increase its service life.
CAUSES OF WEAR
1. Operation of the Nissan Note car in extreme conditions. Frequent driving on dirt roads, towing trailers, heavy loads, driving at high speeds leads to an increase in the load on the crankshaft, spinning it up to maximum speed, which leads to stretching of the timing chain.
2. Since the timing chain is located inside the cylinder block, it is completely washed by engine oil and, as a result, is very sensitive to its quality. In the case of using high-quality synthetic oil, which has specialized detergent additives in its composition, the service life of the timing chain is significantly increased
3. The timing chain involves parts that regulate the chain tension, they are consumables and need to be replaced periodically. During the maintenance of the car, it is necessary to check the degree of wear of the tensioner and the "damper", untimely replacement of these parts can lead to chain stretching and link jumping.
SYMPTOMS
1. Increasing the consumption of gasoline by car;
2. Reducing engine power; 3. The appearance of clanging and noise under the hood of the car with the engine running;
4. A complete stop of the car on the go, when you try to start the engine does not start, and the starter rotates easier than usual;
5. Unstable operation of the Nissan Note engine at idle and in motion;
6. The occurrence of shots in the injector reservoir and exhaust pipe.
All these problems may indicate a shift in the valve timing and loosening of the chain tension. If you notice one or more signs of this list on your car, immediately contact the service station for an inspection.
HOW OFTEN TO REPLACE THE TIMING CHAIN
The frequency of replacement of any consumables for Nissan Note vehicles depends on the driving style and mode of operation of the machine. With extreme driving style and aggressive use of the vehicle, it is necessary to replace the timing chain as it becomes loose and worn.
Under normal operating conditions, it is necessary to replace the timing chain as planned, every 100 - 150,000 km. run. If your car has an analog belt, it must be replaced a little earlier than the time recommended by the vehicle manufacturer.
Trust your car only to professional specialists who are able to competently troubleshoot the timing chain, evaluate lateral runout and play, replace and adjust the operation of tensioners, chain drive dampers and replace the Nissan Note timing chain.
Owners of cars with this type of drive may not be afraid of a break, but on different engine sizes, replacing a Nissan Note 1.4 timing chain or higher is sometimes an inevitable procedure. Over time, stretching can occur and, as a result, a shift in the valve timing.
Based on many years of experience, professional employees of the Garage Technical Center claim that the largest number of engine breakdowns occurs due to insufficient quality and oil level. Operation with the old composition is also unacceptable. Due to lack of lubrication, the chain can stretch.
When to change
The maintenance schedule and the company's engineers do not provide for reinstallation of the drive element, and a condition check is laid down after the first 15 thousand km and then every 30 thousand km. It is absolutely not worth ignoring the deadlines, but inspecting the timing system more often, if possible, good experts strongly recommend.
Important! If a car is purchased with questionable mileage or the purchase is not made directly from the owner, it is imperative to check the degree of tensioner displacement. The allowable limit is a maximum of 1 cm.
If there is any suspicion of a malfunction or a number of typical and well-recognized features of the drive, the need for diagnostics increases. The consequence of delay can be a complex, time-consuming repair, as well as its cost, due to the restoration of the cylinder head or, worse, the overhaul of the internal combustion engine.
Signs of a problem
The fact that the replacement of the timing chain on the Note is approaching is reported by the car in various ways:
- atypical noise when the motor is running, the drive element works louder than usual
- drop, traction surges, revs, increased fuel consumption
- phase shift of the crankshaft and camshaft, signal on the dashboard.
The installation of a new drive element is accompanied by various types of work necessary for confident and long-term operation.
- Filling in new oil. If a composition of questionable quality was previously used, it is better to flush and switch to the recommended one.
- Flushing of radiators of the engine cooling system and air conditioning.
Timing replacement Nissan Note 1.6 in 110 and 140 hp produced for both petrol and diesel variants.
Nissan note. Engine valve noise
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Increased clearances in the valve mechanism, clearances due to malfunctioning valve lifters or wear of the valve mechanism elements |
Replace hydraulic lash adjusters and worn valve train parts |
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Damage to the timing belt or chain |
Replace timing belt or timing chain |
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Improper timing belt or timing chain tension |
Check the tension of the timing belt or timing chain. Replace the timing belt or chain if necessary. |
Engine valves knock: causes and troubleshooting
No matter how reliable the car is, the time comes and you are forced to go to the service station to diagnose and repair faults. At the same time, most of the breakdowns can be fixed with your own hands, but there are also those that only professionals can help to eliminate. Valve knock is a common problem that falls somewhere in between in terms of difficulty. In some cases, it is possible to identify a malfunction and make repairs on your own, while in others you have to contact the master for help.
How to diagnose a knock
Without sufficient experience, it is sometimes difficult for car owners to identify the problem by ear. This is not surprising, because anything can be a source of extraneous noise - a crankshaft, bearings, a faulty belt and valves. But unlike other sounds, the knock of valves gives itself out as a characteristic sonority, with a certain metallic tapping, near the gas distribution mechanism. In addition, unusual noise occurs, regardless of the engine speed.
It is not difficult in practice to recognize that valves are knocking, but sometimes even car owners with experience fail to diagnose their malfunction. But to confirm or refute suspicions, you can make a diagnosis yourself. For this:
Raise the hood, then unscrew the cap from the engine filler hole (through which oil flows).
-Listen to the operation of the motor. If the volume of the sound increases, the valves are the cause of the problem.
-Place a stethoscope near the part you suspect is malfunctioning. With this device, you can accurately determine the cause of extraneous noise.
Reasons for knocking
Valve knocking can be caused by many reasons, each of which deserves special attention. At the same time, keep in mind that all machines are equipped with a camshaft (in the upper part of the engine), and the valves are provided by the elements of this assembly - rods or, in other words, pushers.
So why are the valves knocking? Let's highlight the main reasons:
Changing the gap between valves and pushers. When the car is released, the distance between the rods and valves is fine-tuned. If the parameter deviates from the norm (decrease or increase), a “metallic” tapping appears.
- Filling the car with low-quality fuel. In the case of using bad fuel, engine detonation occurs, which also affects the valves.
- Lack of oil pressure during acceleration. There are situations when the knock of the valves appears only when driving at high speed or at the moment of acceleration. The reason is insufficient pressure in the engine lubrication system to increase the speed.
-Incorrect installation or stray position of the timing belt (how to set marks and tighten the timing belt).
-Natural wear and tear. If valves are knocking on your car, this often indicates a banal deterioration of the part and the need to replace it.
Why there is a knock of valves on a cold engine
When checking, pay attention to one of the main parameters - the temperature of the engine. There are situations when an extraneous sound appears only on a cold or hot engine. If you "bind" the knock of the valves to this parameter, you can draw additional conclusions. So, if an extraneous sound appears only on a cold engine, then the reasons are as follows:
Narrowing of the valves. It is no secret that, in the process of heating, the metal tends to increase in volume, and when cooled, it decreases. For this reason, the distance between the valves (on a cold engine) can be small, and after the engine reaches operating temperature, it returns to the factory setting.
Motor wear. The second reason why valves knock is the deterioration of the engine itself.
It turns out that the gap between the valves and the rods does not correspond to the parameter set at the factory, but this only manifests itself on a cold engine. As soon as the engine warms up, the problem disappears.
Why do valves knock on a hot engine
If the problem manifests itself even after warming up, the reasons may be the following:
Lack of oil in the reservoir.
- Dirty oil filter.
-Insufficient broach of the camshaft mounting bolts to the bed.
In addition, extraneous sound can be caused not only by the sound of valves, but also by hydraulic compensators.
How to adjust valve clearances
The easiest and fastest solution to the problem is to go to the service station and entrust the elimination of extraneous sounds to professionals. But, unfortunately, financial opportunities do not always allow such a luxury, and you have to solve problems with your own hands. There are other situations when the car owner is interested in messing with the car, and personally gain experience in repair.
If you find that the valves in the engine are knocking and decide to fix the problem yourself, get ready for some serious work. One mistake is enough, and the sound will become even louder. That is why, for the elimination of knocking, you should not take on a novice car owner. It is important to clearly know the sequence of actions, and follow it. To avoid mistakes, read the auto repair manual. A brief algorithm is given below:
Drain the engine oil.
- Remove the cylinder head plug. This is necessary to gain access to the valves.
-Rotate the camshaft so that the mark on the pulley aligns with the setting lug.
-Gap between valves and rods determine by touch. At the same time, change the distance using the adjusting washer.
-Roll the washer a certain number of times (it all depends on the make and modification of the car).
- Replace all the parts, then check whether the knock of the valves has been eliminated or not.
If, after the work carried out, the problem has not been resolved, head to the service station and give the car into the hands of the masters. In such a situation, it is unlikely that you will be able to adjust the gap with your own hands. There are situations when other breakdowns are the cause of extraneous noise. But it cannot be ruled out that the previous adjustment was performed incorrectly.
The content of the article:
Removing the top timing chain cover here are the labels. you can see how much the chain jumped relative to the marks. and these are the conditions in which we work, the temperature in the car that is in the shade. the chain and gears of the ox drives have been removed.
For NISSAN NOTE (E11) 1.4 valve clearance data, ignition order, pressure and compression ratio, ignition timing are presented. Upper timing cover.
FACT! Nissan is the third largest car manufacturer in Japan (after Toyota and Honda) and the 8th in the world ranking. The most popular car is the Nissan Qashqai. The name Qashqai is taken from the name of a tribe living in Iran.
Replacing the timing chain drive on Nissan gasoline engines. Nissan Note chain replacement. On cars of the first generation Nissan Note, 1.4-liter CR14DE and 1.6-liter HR16DE chain engines were installed. Both power units.
Alignment mark stamped C: DO NOT rotate crankshaft or camshaft with timing chain removed. As soon as the intake camshaft position adjuster begins to move independently of the camshaft sprocket, the internal adjuster lock pin is disengaged. When assembling, lubricate the threads of the camshaft sprocket bolts.
Timing belt kit NISSAN NOTE (E11) Online shop website
Replacing the Nissan Sunny chain The Nissan Sunny car was produced by the Japanese concern in various bodies, the most famous generations of the Sunny are the N14, N15 and N16 models. All engines on the Sunny car are four-cylinder, have a transverse arrangement. Replacing the Nissan Sunny chain is easy to do, and you can do the work yourself.
The only important condition is that it is necessary to correctly combine the marks of the camshafts and the crankshaft. The work can be completed in a few hours, it will take a maximum of one working day, but it is better not to rush and do everything carefully. The state of the gas distribution mechanism is judged by the upper tensioner - if the tensioner cylinder has already gone far, then the chain is extended and must be replaced.
Replacing the Nissan Note chain On the first generation Nissan Note cars, 1.4 liter CR14DE and 1.6 liter HR16DE chain engines were installed. Both power units are valve, four-cylinder, have four valves per cylinder. According to the factory regulations, it is recommended to replace the Nissan Note chain every thousand. Timing parts will last longer if good oil is poured into the engine and changed on time.
Signs of a faulty chain drive: The cause of the malfunction may not necessarily be an extended chain, the tensioner also fails. To eliminate the defect, you should change the tensioner, this work is simple and does not take much time. Replacing the timing chain Nissan Almera Nissan Almera was produced in two generations, cars of the first version of the N15 were produced from one year to the next, the car was equipped with 1.4 and 1.6 liter GA14DE and GA16DE gasoline engines, as well as a two-liter SR20DE internal combustion engine, which went into series on Almera since the year.
GA14 and GA16 differ only in cylinder volumes, the engines are identical in design. Auto Nissan Almera N16 was produced from one year to the next, in the configuration there were mainly gasoline 4-cylinder internal combustion engines QG15DE 1.5 l and QG18DE 1.8 l. All of the listed engines on the Nissan Almera are with a timing chain drive, the gas distribution mechanism on these engines is very reliable. The first signs of a malfunction begin to appear no earlier than after a thousand km.
