Engine Mazda CY-DE

The 3.5-liter V6 CY-DE or Mazda MZI engine was assembled at the US plant from 2006 to 2007 and installed in the full-size CX-9 crossover, but only in its first year of production. This motor belongs to a huge series of Ford Cyclone Engine gasoline power units.


Production years 2006-2007
Displacement, cc 3496
Fuel system distributed injection
Power output, hp 263
Torque output, Nm 338
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 92.5
Piston stroke, mm 86.7
Compression ratio 10.8
Features DOHC
Hydraulic lifters no
Timing drive chain
Phase regulator iVCT
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 5.2
Fuel type petrol
Euro standards EURO 4
Fuel consumption, L/100 km (for Mazda CX-9 2007)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 180

The engine was installed on:

  • Mazda CX-9 I (TB) in 2006 – 2007.

Disadvantages of the Mazda CY-DE engine

  • The main problem with all Cyclone engines is the short-lived water pump.
  • Even on short runs, it can leak and then the antifreeze will get into the lubricant.
  • Also, the pump is rotated by the timing chain and its wedge usually leads to expensive repairs.
  • Otherwise, this is a completely reliable power unit with a resource of more than 300,000 km.
  • However, it does not tolerate bad fuel: lambda probes and a catalyst burn from it.

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