Duratec 1.8 HE Engine

Ford Duratec HE 1,8 l 125 hp engine is also known as Mazda MZR L8, developed by the Japanese manufacturer, and is a next generation of Mazda engines «F» series. Ford originally placed it into Mondeo, but then it was upgraded, appeared intake manifold channels control system with turbulence, the system of direct ignition of the ignition coil, the electronic throttle and more. Resource of Duratec engine Ford / Mazda LSB 1.8 according to the plant is 217 000 miles., The actual service life of up to 310 thousand, subject to regular maintenance.

Unlike the other Duratec with smaller volume and power, there is already a chain timing drive, significantly increasing reliability. But at the same time, 1.8 liter engine has a congenital disease floating idle speed (intermittent operation of the engine). The problem is solved by washing the throttle or changing the firmware up, in extreme cases comes to drilling holes in the throttle. In addition to motor problems inherent in all other Duratec and the HE, like triplets, different vibrations, knocks and noise, about the causes of these phenomena described here in the section “Troubleshooting”.

To sum up, this engine is one of the most problematic among all Duratec’s, and it is better to look in the direction of the two-liter engine.

Duratec HE/MZR L8 engine specs

Manufacturing Valencia Engine
Production Years 2001- 2010
Cylinder block alloy Aluminum
The power supply system Injector
Configuration Row
Valvetrain Valves per cylinder – 4
Number of cylinders 4
Piston stroke, mm (inch) 81.3 (3.27)
Cylinder bore, mm (inch) 83 (3.26)
Compression ratio 10.8
Displacement, cc. (cu. in) 1798 (109.72)
Power output 115-125 hp / 6000 rpm
Torque output 155 nm / 4000 rpm
Fuel type 95 Gasoline
Environmental standards Euro 4
Fuel consumption, L/100 km (mpg)

City – 9,5 (24.75)

Highway 5.6 (42.00)

Combined 7,0 (33.60)

Oil consumption, L/1000 km up to 0.5
Dry weight Focus Duratec, lbs 205,00
Oil type in engine 5W-20


Ford Duratec 1.8 HE L8 Resource

  • According to the manufacturer – 217 480 miles
  • Real – 310 500 miles


  • Ford C-Max Mk I
  • Ford Mondeo Mk III
  • Ford Focus Mk II
  • Mazda 5
  • Mazda 6
  • Mazda MX-5

How to: Clean & replace T-MAP sensor Ford Duratec HE (Mondeo, Focus, Mazda)


Written by Dan Hoffman

Dan Hoffman

Dan is a co-founder of Engineswork. He knows everything about internal combustion engines. Ask your questions in comments down below this article – he will be glad to help you anytime.

Discussion: There is 1 comment
  1. […] Ford Duratec HE 2.0 with 145 hp by its construction is the same as 1.8 liter, but with cylinders with larger diameter (83 mm to 87.5 mm). Was developed by Japanese company […]

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