Special diesel oils (CD) are widely available today and, judging by the reviews, are quite effective. Diesel engine oils are not suitable for spark ignition engines. There are oils that are suitable for both gasoline and diesel engines. In this case, two classifications SF / CD are indicated on the bank (SF engine with spark ignition).
For engines with an overhead camshaft, the toothed belt must be replaced at the indicated intervals. Otherwise, it is possible that the piston will hit the valves when the belt suddenly breaks. Eliminating the consequences of this will require considerable financial costs from you. In practice, there have already been cases of belt breaks with a range of up to 48 thousand km, but this happened as a result of oil or water getting on them due to depressurization of the lubrication and cooling systems, respectively. However, if you decide to drive without changing the belt after a run of 100 thousand km, then your unwillingness to take the time to change the belt in a timely manner can turn out to be much more time and money for you in the future.
To replace the fuel filter, buy the best one available to you. Some filters may look good on the outside, but «fail to perform their duties». Don't forget to also change the O-ring on the filter housing. We also note that on a diesel engine it is equally difficult to prevent both fuel leakage and air infiltration into the fuel system, which greatly disrupt the operation of the engine.
If air enters the fuel lines, it may be necessary to remove it through a special valve using a small hand pump mounted for these circuits on the high pressure fuel pump. These diesels have a self-removing air supply system. It is only necessary to scroll the engine with a starter, and the air will be removed.
It is difficult to prevent moisture from condensing in the fuel filter, so a warning light is provided on the instrument panel to indicate the presence of water in the fuel system.
Usually, when changing the oil, it is only necessary to check the condition of the filter. However, if the vehicle is used in difficult conditions such as high humidity and large differences between day and night temperatures, check the condition of the filters more often.
All diesels smoke in the cold, but this should not be excessive. One of the most common reasons for this is a failure in the injection timing of the high pressure pump, which is easily corrected by re-adjusting the injection timing according to the marks on the crankshaft and pump. This work is very similar to adjusting the initial ignition timing on a gasoline engine. The operation can be done with the engine not running, but it is better to purchase a special pump for these circuits for setting the injection timing on diesel engines, which is fastened with a clip on the fuel supply pipe of the nozzle and flares up under the action of the shocks of the fuel passing through the pipe.
Another reason is the leakage of fuel through the injectors with a loosely closed fuel supply channel, which can lead to overflow of the cylinder with fuel and, as a result, to excessive smoke at start-up. In addition to general cleaning of injectors and replacing worn out ones with a run of about 110 thousand km, there is little that can be done at home to check their operation. It is necessary to remove them and give them to check on any control equipment.
New injectors are not cheap, but you can save a lot of money by going to a diesel repair shop and having your injectors calibrated.
However, you can extend the life of your injectors by keeping the diesel intake air and fuel filters clean, and thereby counteract injector fouling. For these circuits, special cleaners should be periodically poured into the fuel tank in a small amount.
If you follow the high pressure fuel pump, it will work for a long time and work properly. However, we want to warn you that replacing it is a rather expensive undertaking.
Poor starting and low throttle response of a diesel engine can be caused by many things: poor quality spark plugs, clogged fuel line channels leading to a drop in fuel supply pressure, malfunctioning fuel lines, and even improper installation of injectors. It is easy to identify poorly performing spark plugs by how long the preheat indicator light does not go out.
Like gasoline engines, diesel exhaust must be smokeless. In addition, no smoke should come out of the open neck of the oil filler pipe when the engine is warm. Since a diesel engine is noisier than a gasoline engine, you must distinguish between running noise and the sound of worn pistons, connecting rods, camshafts, etc. If you have any doubts about the condition of the engine, seek professional help.
Turbodiesels are very popular because turbocharging fits well with diesel performance. Turbodiesels operate at low boost pressure and at low engine speeds, which gives them a longer service life than gasoline engines.
With the exception of the engine, these diesel cars are identical in their design to gasoline ones, the same applies to suspensions, brakes, but consider the difference in spare parts. For example, exhaust systems last a long time, but differ from similar gasoline engines. Keep in mind that parts of gasoline engines may look similar and match in size, however, the diesel cylinder block is different from the corresponding gasoline engine block and in most cases cannot be selected as a replacement. Gear ratios of gearboxes and clutches also differ.