Engine Nissan QG18DE

Engine Nissan QG18DE

The 1.8-liter Nissan QG18DE engine (or QG18 for short) was produced at the company’s factories from 1998 to 2006 and was installed on the company’s mid-size models, such as Almera, Primera and others. The power unit had a 105 hp gas version. under its own index QG18DEN.

QG18DE engine was used in Nissan vehicles with high torque at low revs. Such an engine is considered very economical – fuel consumption is fixed at about 7 liters per 100 km, and 97% of the torque is produced by it in a low range of 2400-4800 rpm. Environmental cleanliness and low toxicity is ensured by a special design of the piston crown with a neutralizer surface of up to 50%.

The QG family also includes internal combustion engines: QG13DE, QG15DE, QG16DE and QG18DD.

The engine was installed on:

  • Nissan Almera 2 (N16) in 2000 – 2006;
  • Nissan Almera Tino 1 (V10) in 2000 – 2006;
  • Nissan Avenir 2 (W11) in 1998 – 2005;
  • Nissan Bluebird Sylphy N16 in 2000 – 2006;
  • Nissan Primera 2 (P11) in 1998 – 2002;
  • Nissan Primera 3 (P12) in 2001 – 2008;
  • Nissan Sentra 5 (B15) in 2000 – 2006;
  • Nissan Wingroad 2 (Y11) in 1999 – 2005.

Specifications

Production years 1998-2006
Displacement, cc 1769
Fuel system distributed injection
Power output, hp 115 – 128
Torque output, Nm 158 – 175
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 80
Piston stroke, mm 88
Compression ratio 9.5 – 10
Features EGR
Hydraulic lifters no
Timing drive chain
Phase regulator at the N-VCT inlet
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 2.7
Fuel type 95
Euro standards EURO 3/4
Fuel consumption, L/100 km (for Nissan Primera 2005)
— city
— highway
— combined
9.6
6.1
7.4
Engine lifespan, km ~250 000
Weight, kg 138

Disadvantages of the QG18DE engine

  • The timing chain delivers the most problems, often it rings already at 100,000 km;
  • Next come complaints about oil consumption, which can start even at low mileage;
  • Antifreeze leaks through the idle valve gasket directly to the ECU;
  • For smooth operation of the motor, it is required to periodically clean the throttle and the EGR valve;
  • The network describes cases of destruction of the catalyst with the tightening of the crumbs into the cylinder.

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