The automobile concern Opel for a long period of time equipped its vehicles with diesel power units. The first motors were models with the index Y20DTH, Y20DTR, with a volume of 2 and 2.2 liters, respectively. The production of this type of engines continued until 2006.
The development of such power units was carried out in the 90s of the last century, which explains the rather modest technical characteristics. At the same time, the engines are characterized by reliability, durability. Wear resistance, show high survivability, are able to work on not the most qualitative fuel. These parameters are compensated by the lack of vivacity and dynamics.
The 2-liter power unit was the first to be produced. In 2002, a modified analog, a motor with a volume of 2.2 liters, entered the market. In its design, both engines are identical. The later model is characterized by an increase in the stroke of the cylinder piston. Other things being equal, such a feature allowed to keep the diameter of the cylinders, while increasing the volume of the motor.
Designers had to develop a new crankshaft for the power unit Y20DTR. Another innovation was the use of a turbine with variable geometry, respectively higher performance. Motors Y20DTH and Y20DTR are equipped with different fuel injectors, there are also differences in the transmission, for the first motor used a box F23, for the second – F35.
Each of the motors is equipped with a chain drive timing. A single-row chain is used for connection of the fuel injector and camshaft. Combination of the fuel injector and crankshaft in one system is achieved by using a double-row chain. The oil pump is controlled from the crankshaft sprocket.
The longevity of the power unit largely depends on the technical condition of the drive. According to experts’ estimates, the resource of each chain exceeds 300 thousand kilometers. At the same time cases of breakage of a double-row chain are practically excluded. The owner’s task is to check the condition of the guides and shoes. In case of wear and tear, these units should be replaced promptly.
Technical characteristics
| Characteristics | Opel Y20DTH | Opel Y20DTR |
|---|---|---|
| Engine type | Diesel, turbodiesel | Diesel, turbodiesel |
| Volume | 2.0 liter (1995 cm³) | 2.0 liter (1995 cm³) |
| Maximum power | 100 hp (74 kW) at 4000 rpm | 120 hp (88 kW) at 4000 rpm |
| Maximum torque | 230 Nm at 2000 rpm | 280 Nm at 2000 rpm |
| Number of cylinders | 4 | 4 |
| Configuration | Row | Row |
| Cylinder diameter × piston stroke | 84 mm × 90 mm | 84 mm × 90 mm |
| Fuel injection system | Common Rail | Common Rail |
| Charging | Turbocharging with intercooler | Turbocharging with intercooler |
| Environmental Standard | Euro 3 | Euro 3 |
| Cooling system | Liquid cooling | Liquid cooling |
| Fuel system | Direct injection | Direct injection |
| Compression ratio | 18:1 | 18:1 |
Typical defects and breakdowns of Y20DTH, Y20DTR engines
Y20DTH, Y20DTR engines have been in operation for almost 20 years. During this time, an extensive database of typical breakdowns of power units has been collected. When the owner applies to the service center. An experienced master first of all draws attention to standard defects. Most of the breakdowns are associated with prolonged operation, wear and tear of internal combustion engine components. But other defects can not be completely excluded.
For Y20DTR motors with a volume of 2.2 liters, a typical problem is the failure of the crankshaft. Failure of the node is fixed in the process of driving or starting the vehicle. Most often such a defect is observed after 300 thousand kilometers of mileage. Accelerates the process of failure of the crankshaft by the owner himself. To do this, it is enough not to pay attention to problems with the lubrication of liners, constantly moving “in tension”. The liners can be easily rotated, and situations with their jamming are not uncommon.
A typical failure of power units is partial destruction of the guide plates of the timing drive. Plastic elements fall into the pump oil receiver. The engine does not get enough working fluid, oil starvation occurs. The consequence is jamming or rotation of the liners. For a 2.2 liter motor, mechanical failures of the crankshaft are not rare. Such situations require expensive repairs, as damage to valves and pistons occurs.
On Opel Y20DTH, Y20DTR engines, a fuel pump VP44 is installed. With this node is associated with a large number of motor breakdowns. Periodically, mechanical and electrical components fail. Most often the control transistor burns out. Such situations occur due to overheating of the unit. This failure manifests itself in the fact that the owner can not start the car.
Power units with a volume of 2 and 2.2 liters, manufactured in 2002, have a typical defect. The fuel pump shaft position sensor loop is exposed to corrosion, can fail at one point. Such a problem is caused by the lack of protection of the loop from external loads. On older internal combustion engines a different pump was installed, the stub to it was in diesel fuel. Accordingly, the appearance and development of corrosion was excluded.
Unskilled replacement of the fuel filter is dangerous for the fuel injector of Y20DTH, Y20DTR engines. Addressing to a bush workshop is fraught with severe consequences. When installing the filter element, the cup is completely filled with diesel fuel, since there is no swap mechanism in the system. At the first start without fuel, the system is inflated. The engine runs in dry mode, the main elements of the fuel injector quickly wear out.
Standard problems with EGR have not bypassed the Opel Y20DTH, Y20DTR motors. With intensive operation there is a deposit of soot in the intake tract. The recommended interval for cleaning the system does not exceed 50 thousand kilometers of mileage. Determine the need for maintenance can be determined with difficulties in starting the power unit. Another solution is to disable the EGR system. The system can be deceived by a special emulator. You can get rid of frequent clogging of the particulate filter by cutting it out.
In general, the power units Y20DTH, Y20DTR are reliable and unpretentious. The turbine works properly at a mileage of 300 thousand kilometers and more with proper care. On 2-liter motors, the flywheel also has a long service life. On versions of 2.2 liters, this element is changed after 200 thousand kilometers. The piston group has an operating life of 500 thousand kilometers, is wear-resistant and unpretentious.