Engine Nissan YD25

The 2.5-liter diesel engine Nissan YD25DDTi or YD25 has been produced since 1998 and is installed on the most popular minibuses, pickups and SUVs of the company. This motor replaced the CD20 and TD25 on some cars. The cylinder block here is an in-line 4-cylinder, cast iron, with a cylinder diameter of 89 mm. Inside the block there is a crankshaft with a piston stroke of 100 mm, and the length of the connecting rods is 154.5 mm. All this gives 2.5 liters of working volume.

The most popular YD25DDTi came in 2005 for Nissan Navara (D40) and Pathfinder (R51). It originally produced 126 kW (171 PS; 169 PS) at 4,000 rpm and 403 Nm of torque. In 2010, Nissan updated the engine for the Nissan Navara (D40) and Nissan Pathfinder (R51) with the aim of generating 140 kW (190 PS; 188 PS) and 450 Nm of torque. In 2011, the Nissan Murano was equipped with an updated 140 kW engine and 450 Nm of torque.

Specifications

Modification Di with Bosch VP44 injection pump
Displacement 2488 cc
Fuel system direct injection NEO-Di
Power output 150 hp
Torque output 280 Nm
Cylinder block alloy cast iron R4
Block head aluminum 16v
Cylinder bore 89 mm
Piston stroke 100 mm
Compression ratio 17.5
Engine features intercooler
Hydraulic compensators no
Timing double-row chain
Phase regulator no
Turbocharging Garrett GT1749V
Recommended engine oil 6.9 liters 5W-30
Fuel type diesel
Euro standards Euro 3/4
Engine lifespan 300 000 km
DCi modification with Common Rail DENSO
Displacement 2488 cc
Fuel system Common Rail
Power output 110 – 190 hp
Torque output 260 – 450 Nm
Cylinder block alloy cast iron R4
Block head aluminum 16v
Cylinder bore 89 mm
Piston stroke 100 mm
Compression ratio 15.0 – 18.0
Engine features intercooler, EGR
Hydraulic compensators no
Timing double-row chain
Phase regulator no
Turbocharging one turbine
Recommended engine oil 7.6 liters 5W-30
Fuel type diesel
Euro standards Euro 4/5
Engine lifespan 320 000 km

Frequent problems

The YD25 engine, with proper care, regular maintenance and the use of quality oil and fuel, is quite reliable and hassle-free. It needs periodic adjustment of the valve clearances, but this is recommended in case of noise. The injectors here serve about 150 thousand km, the turbine resource is more than 250-300 thousand km, it would also be nice to systematically clean the EGR valve – soot accumulates quite quickly. With adequate care, the resource of the YD25DDTi engine exceeds 300 thousand km.

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