Nissan QG18DE 1.8L Engine Specs, Problems, and Reliability

Nissan QG18DE 1.8L Engine Specs, Problems, and Reliability. The QG18DE engine is the same as the 1.6-liter QG16DE, however it has the larger bore (80.0 mm). As a result, its displacement is 1.8 liter. That gave more torque at low rpm. But these 1.8 and 1.6-liter engines are really comparable.

Nissan QG18DE 1.8L Engine Specs

Nissan QG18DE 1.8L Engine Specs, Problems, and Reliability

The QG18DE utilizes the same variable valve timing system (CVTC) on the same camshaft, timing chain, variable geometry intake manifold with valves, cylinder head, and so on. There are no hydraulic tappets in the engine also (every 60,000 miles, please, visit service for valve gap/clearance adjustments). The engine is rather ordinary, nothing special, no high technologies and that is due to the fact that it will run long mileage efficiently.

Nissan QG18DE Engine Problems and Reliability

  1. The engine consumes too much oil. That is the unique feature of that engine. Normally, usage is up to 0.5 liters per 600 miles (1,000 km). If it is around 1 liter, you ought to contact with service or auto repair shop.
  2. There is an issue with the idle valve gasket. Ultimately, antifreeze starts dripping directly into the engine control system. Replacement of the gasket fixes the problem.
  3. The timing chain is undependable. It is much better to change the timing chain at 100,000 mileage.

you must see more engine detail in here:  Engine – US Cars News or you can see on wiki here

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Nissan QG18DE 1.8L Engine Specs

Manufacturer Atsuta Plant, Aguascalientes plant
Production years 1999-2006
Cylinder block material Cast Iron
Cylinder head material Aluminum
Fuel type Gasoline
Fuel system Electronic fuel injection
Configuration Inline
Number of cylinders 4
Valves per cylinder 4
Valvetrain layout DOHC
Bore, mm 80.0
Stroke, mm 88.0
Displacement, cc 1769
Type of internal combustion engine Four-stroke, naturally aspirated
Compression Ratio 9.5
Power, hp 116-125/5600; 128/6000
Torque, lb ft 130/4000
Engine weight
Firing order 1-3-4-2
Engine oil weight 5W-20, 10W-30, 15W-40
Engine oil capacity, liter 2.7
Oil change interval, mile 10,000
Applications Nissan Almera, Nissan Primera, Nissan Pulsar, Nissan Sentra, Nissan Sunny, Nissan Expert, Nissan Avenir

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