Engine Opel Z14XEP

The Opel Z14XEP engine is a 1.4-liter 4-stroke naturally aspirated petrol engine of the second generation of the Ecotec Family 0 family, developed by Opel (then a subsidiary of GM). The engine was produced from 2003 to 2010.

The Z14XEP engine uses a lightweight cast iron cylinder block with a cast iron crankshaft and an aluminum overhead camshaft head with 2 chain drives (DOHC) and 4 valves per cylinder. This engine used TwinPort technology – dual intake ports with a throttle closing one of the ports at low revs, providing a strong air swirl for higher torque levels and better fuel economy. The engine uses ECU Bosch ME7.6.1 / Bosch ME7.6.2.

Specifications

Manufacturer Aspern engine plant
Also called Z14XEP
Production years 2003-2010
Cylinder block alloy cast iron
Fuel system injector
Configuration inline
Number of cylinders 4
Number of valves 16
Piston stroke, mm 80.6
Cylinder bore, mm 73.4
Compression ratio 10.5
Displacement, cc 1364
Power output, hp 90/5600
Torque output, Nm / rpm 125/4000
Fuel type 95
Euro standards Euro 4
Fuel consumption, L/100 km (for Opel Astra H)
— city
— highway
— combined
8.2
5.2
6.3
Oil consumption, gr/1000 km up to 600
Recommended engine oil 5W-30, 5W-40
Engine oil capacity, liter 3.5
Oil change interval, km 15000
Normal engine operating temperature, °C 90-95
Firing order 1-3-4-2

Explanation of Z12XEP marking

  • Z – Euro 4 engine;
  • 14 – 1.4 liters;
  • X – Compression ratio from 10 to 11.5: 1;
  • E – multi-point fuel injection system;
  • P – increased power.

Frequent problems

  • The biggest problem here is the constantly stuck Twinport dampers;
  • a single-row timing chain can stretch and start rattling on a run up to 150,000 km;
  • the reason for floating revolutions and a drop in thrust is most often in a clogged EGR valve;
  • the source of the lubricant leak is usually the oil pressure sensor and the valve cover;
  • oil pump, thermostat and ECU control unit have a low resource here.

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