Advice 1: How to check the CVT when buying

The trend of the modern automobile is such that the CVTs or continuously variable transmissions are increasingly equip their cars the most well-known manufacturers. Despite the fact that the CVT is the perfect solution for a comfortable and safe ride, a mostly domestic motorists are afraid to deal with him.
CVT
On numerous automotive forums is very common is the view that the service life of the continuously variable transmission is little more than a hundred thousand kilometers. Believe it or not such a statement – especially individual case, but still the CVT is a very complex mechanism and requires careful and timely care. So, choosing a used car equipped with a CVT, you should not rush into buying. First we need to know more about the technical condition of the vehicle.

Mileage



It is no secret that on the odometer of each car standing on the market neat, straight rows, specified is not the real mileage. This implies that the odometer reading never should be trusted, despite the fact, when buying a used car with a CVT.

We must remember that in the automotive market miracles do not happen and the seller is not a good magician but a person who is capable of any trick, but to get to give unsuspecting and inexperienced buyer documents on a faulty car.

Fortunately, the newer the car the harder it is to conceal its actual mileage, because the mileage is saved in a special electronic control unit, which is equipped vehicle.

Engine operation and oil condition



In order to ensure good vehicle with a continuously variable transmission, you should listen to the sound of the motor. When you test in, the car has to move smoothly, and the speed dial without jerks and suspicious noises. The presence of sounds uncharacteristic for a running engine may indicate the wear of specific parts. Ideally, a sound running engine should resemble the noise of a powerful fan.

It is important to know that a car with a CVT designed for a relaxing and not too fast driving. Sharp braking and fast driving on rough roads, can significantly reduce the service life of the continuously variable box.

Check the oil in the CVT – another important point in the diagnosis of the car before you buy. Be aware that the color of the oil should not be dark and should not have a pronounced smell of burning. Checking oil should be done in two modes – with the engine running and when off.

Alternatively, in order to check the condition of the oil in the variator, it is possible to use a thick, white sheet of paper. Causing a few drops of liquid on paper, you need to check the presence of dark dots or lumps. If any, it indicates that the oil in the variator had not changed.

Advice 2: How to check the engine when buying

When buying a used car it is best to banish it to the service station and to be there for a diagnosis through a specialist. In the case where this is not possible, inspection will have to hold their own. If the body and interior of the car is very clear how to check the engine when buying?
How to check the engine when buying
You will need
  • gloves
  • - clean cloth
  • - a white sheet of paper
Instruction
1
The external examination. Lift the hood of the car and inspect the engine compartment. Here you should pay attention to oil spots and stains: on a healthy engine shouldn't be. Even slight traces of oil may in the future mean for you, the problems related to his leak. Pay special attention to the areas around the distributor and fuel pump. Ifthe reason for the drip tip can become as leaky gaskets and rubber seals and is loose clamps on the hoses. Another reason for the traces of oil can be a loose fitting cap cylinder head: inspect the junction, make sure it has no traces of oil, no sealant. Even if the current owner before the sale brought the engine in order, he could have something to miss. For example, traces of faulty motor could stay on the inside of the hood, so carefully inspect it.Inspect bolts and nuts: if you are around or you will find scratches, albeit small, it can serve as a clear sign that the motor is at least opened. And well, if in this case the seller to inform you, that the engine recently had a routine overhaul.
2
Inspect condition of oil and antifreeze. Check the oil using the dipstick, the antifreeze - just unscrewing the cap of the appropriate tank or radiator. The oil should be transparent, have a normal, not too viscous and the smell. The oil must be free of impurities or air bubbles, and on the dipstick there should be no divorces or outside of the RAID. The same applies to antifreeze: liquid should be clear, have a characteristic sweet smell and no oil stains or bubbles on the surface.The bubbles in the liquid - the first sign of leaks, remember: this is a very serious problem. In the case of, for example, antifreeze, air bubbles can indicate a coolant leak in the engine because of a leaky gasket or crack in the cylinder head, which is completely unacceptable. The antifreeze corrodes the piston rings and causes the condition of the motor permanent damage.
3
Unscrew the oil fill cap neck. Inspect the cover: in any case, under it or on the edge of the mouth should not be foam or plaque. Dense plaque characteristic white-yellow color means that the engine gets the coolant. About the consequences of such a failure we have already discussed in the previous step.
4
Inspect rubber products and candles. The seals and hoses must not be external signs of damage and cracks.
If in the engine compartment dusty and dirty, please wear gloves and arm with a cloth to inspect all nodes: years of grime can hide many defects.
If possible, remove one or two candles, their appearance can be very telling.
Under normal circumstances, the spark will cover a very thin layer of light gray or light yellow coating, and the electrode may be slightly frayed. Candles with a crack on the insulator surface means that the engine will operate with a thud, and the candle with light rich sediments talking about incorrectly chosen oil. Melted Central electrode of a candle can signal a whole bunch of issues: from early ignition and poor fuel until the fault of the valves or ignition distributor. The formation of a kind of glaze consisting of carbon black, or strong wear of the electrodes means that used fuel or oil with lots of additives. Oily plugs can be a sign of too much oil in the lubricating system, and the more serious wear of rings, cylinders and valve guides. Finally, the soot on the plugs indicates that the mixture or the air filter, which have not changed.
5
Start the engine and pagesuite on the spot. The cranking motor should not make extraneous sounds and screeching. Not to say that the engine should start on the first attempt, regardless of the degree of heating and the weather conditions. To work the motor should smoothly, without interruption. If the engine jerks, there are extraneous vibration, and the rhythm can be called inconsistent, it is likely that the motor troit. This means that not working some of the cylinders. Whilethe reason may be a fault with the ignition system, incorrect operation of one of the candles, burned piston or rich mixture. In any case, the problem should be discussed with the owner.
6
Read the readings. When the engine is running after warming up the arrows of the pressure sensors and oil temperature must be within normal limits, is in the middle position.
7
Look at the smoke from the exhaust pipe. If when starting the engine white smoke appeared abundant, but then after a short period of time is completely gone, it is likely that it was just condensation and not to worry. If the smoke continues to pour out of the exhaust pipe, by its color and smell, you can conduct a rapid diagnosis. So, white smoke, or smoke with a slight bluish tinge, which dissipates quickly and leaves in the air a sweet smell - a clear sign of the presence of antifreeze in the cylinders of the engine. Blue or grey smoke (maybe with a hint of white), which for a time hangs in the air light purple or grey smoke means that the combustion chamber gets the oil. The elimination of both faults can cost you dearly, so it is better not to take chances. Finally, the black smoke means that the fuel and air is burned inefficiently. Ifthe reason can be many faults: SamAccountName air nozzles, leaking injectors, faulty lambda probe or MAF sensor. The consequences are that the engine wear is considerably accelerated, and the exhaust becomes highly toxic.
8
Go for a test drive. It needs to identify those flaws that you might not notice when the engine is idling. Check how the motor responds to the drive of the high and low the motor as it accelerates and behaves in dynamics under load. Alert you need background noise, knock, rough running and loss of power and, of course, the smoke from the exhaust system.
Note
Independent engine control - it is still quite risky, and without proper experience we would not recommend to fully trust its results. If you have any doubts, try before you buy still to arrange inspection of the car at the service station or bring a mechanic friend with you.
Useful advice
If you can not determine whether the car smokes due to the presence of antifreeze or cause smoke is oil, there is a simple test. When the car engine is properly warmed up, cover the exhaust a sheet of white paper for a few seconds: water stains to dry completely, but the spots of oil will remain. But, strictly speaking, in the presence of any of the aforesaid causes smoke, we strongly suggest you to make a purchase.

Advice 3: How to check the oil in the CVT

Check the oil in the CVT is to measure its level, which must be in the range between the minimum and maximum values. The oil level is checked using a special probe, which is placed in the filler neck of the CVT.
The oil level in the variator is checked with a feeler gauge
Check the level of fluid in the CVT should be performed when the oil temperature is 50-80°C. to warm up the engine, you have to drive 10-25 miles depending on the time of year. The lower the temperature, the longer heating is required for the oil to reach the above temperature range. Measurement of the oil level with a cold engine can cause measurement error, which resulted in the increased oil level will be above or below its nominal value.

Verification



Before you scan you must set the vehicle on a horizontal surface. The venue of the measurement can serve as a garage with a flat floor or open paved area. The engine during the test must be run at idle.

Further the inspector presses the brake pedal, and sequentially switches the selector to all of the provisions, stopping at each position for 10 seconds. Then the selector returns to its initial position after the brake pedal is released.

After switching the selector must exit the cab and open the hood the engine compartment. To measure oil level is the dipstick located in the filler neck of the CVT. To remove the probe from the neck, you need to perform the unlocking of the locking mechanism by pressing the switch located at the head of the probe.

To protect your hands when removing the latch it is necessary to use gloves or a rag. Also need a dry cloth to wipe the surface of the probe. During the inspection the filler neck of the variator should not be exposed to moisture or dust.

The dried probe must be fully placed in the neck, then remove and check the fluid level. Oil level fluid level should be between the two notches, showing the minimum and maximum oil level. After the end of the test probe falls back into the neck, after which it switches the latch to the closed position.

What to do if the oil level goes beyond the required values



If the oil level in the variator below the minimum mark, required to add an identical fluid grade specified in the operational documentation on the car. After topping you want to re-check fluid level. If the rate of decline of the oil level higher than its natural dynamics to flow, you need to check the tightness of the system.

If the oil level exceeds the desired value, the surplus liquid is pumped with a syringe on the end of which is secured the rubber transition tube.

Advice 4: How to check the car engine when buying?

The engine is the heart of the car. Therefore, when buying a car you need to pay close attention to this power unit. If this is not done, then after the purchase of the machine there is a risk of problems with the engine. And this, in turn, may require significant financial costs.
How to check the car engine when buying?
Instruction
1
To test the motor, first you need to open the hood and assess the external condition of the motor. Carefully inspect the rubber bushings, hoses and rubber parts that wear out the fastest. You also need to look under the bottom of the car to ensure no oil stains on the block. If any still available, this means that you need to change any seals or gasket of the engine.
2
The next stage is the assessment of the condition of the spark plugs. The carbon on the contacts of the candles will help to determine whether the cylinder oil is set correctly the motor, how is the quality of fuel refuels the car.
3
Check engine is check all the fluids. If you find that the oil level is less than the maximum level, and the external signs of a leak there, it means the oil is burnt together with fuel. The reason for this phenomenon could be worn piston rings or valve seals. In addition to oil to assess the level of coolant. If it was changed on time, then you will not see dark brown fluid in the expansion tank.
4
To evaluate the performance of the engine can and on external signs. If you are running the starter is making a great effort, this means that either exhibited bad ignition, or the spark is not powerful enough. Be sure to listen if it's even a working engine, do not idle. Discharge from the exhaust pipe can also talk about different problems. Black or gray smoke said blockage of fuel injectors, the white smoke indicates injected into the cylinders of the antifreeze. Take a few prosazovat and look, whether there are noises in the time when the engine is hyped to the limit.
5
The last step is to check the engine while driving. Will appreciate how quickly the car accelerates, it doesn't do it at a set rate. Check out how the engine pulls the car uphill. If you feel that the lifting motor power is not enough, as the speed drops, so the car has serious problems.
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