Engine Nissan VQ25DE

The 2.5-liter Nissan VQ25DE engine (or VQ25 for short) was first shown in 1994 as the main power unit for the popular Cefiro, Cedric or Leopard models on the Japanese market. In 2004, the motor was slightly updated and began to be installed on the Fuga, Teana sedans and the Elgrand minivan.

The VQ20 series also includes internal combustion engines: VQ20DE, VQ23DE, VQ25DET, VQ25DD and VQ25HR.

The engine was installed on:

  • Nissan Cefiro 2 (A32) in 1994 – 2000; Cefiro 3 (A33) in 1998 – 2004;
  • Nissan Cedric 9 (Y33) in 1995 – 1999;
  • Nissan Elgrand 2 (E51) in 2002 – 2010;
  • Nissan Fuga 1 (Y50) in 2004 – 2007;
  • Nissan Gloria 10 (Y33) in 1995 – 1999;
  • Nissan Leopard 4 (Y33) in 1996 – 1999;
  • Nissan Teana 2 (J32) in 2008 – 2013;
  • Renault Latitude 1 (L70) in 2010 – 2015;
  • Samsung SM5 1 (A32) in 1998 – 2005; SM5 3 (L43) in 2009 – 2019;
  • Samsung SM7 2 (L47) in 2011 – 2019.

Specifications

Start of production 1994
Displacement, cc 2495
Fuel system distributed injection
Power output, hp 190 (1994 version)
185 – 210 (2004 version)
Torque output, Nm 235 (1994 version)
230 – 265 (2004 version)
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 85
Piston stroke, mm 73.3
Compression ratio 9.8 (1994 version)
9.8 – 10.3 (2004 version)
Features ECCS, NDIS
Hydraulic lifters no
Timing drive three chains
Phase regulator no (1994 version)
at the CVTC intake (2004 version)
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.0
Fuel type 95
Euro standards EURO 3/4 (1994 version)
EURO 4/5 (2004 version)
Fuel consumption, L/100 km (for Nissan Cefiro 2002)
— city
— highway
— combined
14.4
7.7
10.1
Engine lifespan, km ~330 000
Weight, kg 185

Disadvantages of the VQ25DE engine

  • The main problems are caused by catalyst crumbs entering the combustion chamber;
  • An oil burner exceeding 1 liter / 1000 km hints at the appearance of a scuff in the cylinders;
  • The engine is afraid of overheating, from which mating surfaces quickly warp;
  • After 200,000 km of run, it often stretches here and the timing chain begins to rattle;
  • The culprit for floating speeds is often a dirty idle valve;
  • Oil oozes from under the valve cover and from the camshaft position sensors here.

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