GM Opel 1.7 CDTI Engine History, Specs, Oil Change And Service

1.7 CDTI Ecotec engine from GM, Opel, Vauxhall, Isuzu and Honda has been around since 1990. However, this did not prevent it from achieving success under the hood, for example, the Opel Astra IV. Reason? This is a durable structure.

GM Isuzu Opel Vauxhall Honda 1.7 CDTI Ecotec Engine Specs Reviews Problems Reliability

The 1.7 CDTI Ecotec engine is part of the Circle L family, founded in the late 1990s by Isuzu engineers. Why did the Japanese company creator give the technology to General Motors and Opel? The brand partnership with American companies ran from 1971.

But in 1999, GM increased its share in Isuzu to 49 percent. And this allows America to take control of the company. Even though the 1.7 DI, 1.7 DTI and 1.7 CDTI engines were new to the market, they weren’t built from scratch. The basis of the work is the 4EE1 diesel that was presented in 1990.

1.7 CDTI Specs

Although the displacement remained the same and was still 1686 cm3, the 4-cylinder cylinder head received 16 valves instead of 8. In addition, the power level increased significantly, and after 2003 engineers used a common rail direct injector in the engine.

The technological fundamentals of the 1.7 CDTI engine are out of date. And this means that, although the engine is not understaffed and surprisingly quite economical, it is outperformed by market rivals in one respect, but quite an important feature.

I’m talking about work culture. Engines equipped with rotary pumps known as 1.7 DI and 1.7 DTI were surprisingly noisy. What other features does Isuzu diesel have? Engineers use aluminum cylinder heads, most versions have Mitsubishi turbochargers, common rail injectors are branded with the Denso or Bosch logo, and versions under 80 horsepower do not have, for example, expensive dual mass wheels.

Supercharging is carried out using a standard compressor or one equipped with a variable geometry of the blades and equipped with an intercooler. Diesel particulate filters have been the standard since 2007 on the Zafira and 2009 on other versions. In addition, the 1.7 CDTI diesel – which was later renamed the A17 – meets the requirements of the exhaust emission standards from Euro 3 to Euro 5.

1.7 CDTI Installed

  • Opel Corsa
  • Opel Astra
  • Opel Zafira
  • Opel Vectra
  • Opel Meriva
  • Opel Mokka
  • Chevrolet Cruze
  • Chevrolet Trax
  • Honda Civic

1.7 CDTI Ecotec Engine Problems & Reliability

Opel’s 1.7 CDTI Ecotec engine was installed in a large number of volumes. And today’s high production rates allow fairly informed decisions about the durability of structures. So that? The list of highly durable elements includes classic turbochargers and injection equipment (especially injection pumps).

The first failure on an Isuzu diesel usually occurs after a distance of 200,000-250,000 kilometers. This, however, doesn’t change the fact that the engine can travel even 400,000-450,000 kilometers without a general overhaul and with basic service maintenance.

One of the most popular faults of Opel’s 1.7 CDTI Ecotec engine is a leak from the oil pump. This is a serious failure for two reasons.

  • First: oil disappears in the engine, and poor lubrication is dangerous for turbines and metal parts.
  • Second: the oil drips right into the timing belt. And this can cause faster wear or, for example, to slip.

With this problem, the piston will collide with the valve, and the engine needs to be repaired. In general, the seal on the oil pump is worn. The mechanic’s own pump repair is estimated to be around $ 140. The cost of replacing the timing gear should also be added to this amount.

However, the 1.7 CDTI Ecotec engine also experienced oil flooding in the exhaust. The belt change interval is determined by Opel at 90,000 kilometers or 6 years. But it’s better to cut it short! Usually, the tensioner or roller cannot withstand long operation.

The tensioner may also sometimes run into trouble, and it is better to replace the pulley completely. It is more durable. As for the price itself, the fees range from $ 140- $ 165. What else is problems on the Isuzu 1.7 CDTI Ecotec engine? The design of this diesel engine is struggling with a turbocharger control valve error. As a result, the power drops significantly.

The situation with the rotary lobe pumps found on 1.7 DI and 1.7 DTI engines is simple. This is a very durable element, the probability of its regeneration is no more than $ 275. Slightly higher costs are associated with common rail injector failure.

Denso-branded parts are expensive to replace – prices start at nearly $ 135 per piece. Bosch injectors can be repaired for as little as $ 80. New section? This one will cost you at least # 135 per piece. On the 1.7 CDTI Ecotec engine, the fuel pressure regulator ($ 55- $ 95) also breaks down over time, or the flow meter after 100,000-120,000 kilometers (price from $ 115).


The 1.7 CDTI Ecotec engine from Opel has undoubtedly been through its best years. Mainly because structurally remembers 1990! On the other hand, the ancient foundation extended with modern elements gave it quite an important feature – making it durable.


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