Nissan Hybrid Engine QR25DE Workshop Manual

Nissan Hybrid 2007 2.5L QR25DE Repair Manual. This is a manual on the engine mechanics of this Nissan model. Contains instructions and data on repair procedures. Includes exploded views of engine components, engine block, and cylinder head.

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The Nissan QR25DE engine is a 2488cc 4-cylinder engine driven by a timing chain drive. Your order of starting this engine; 1-3-4-2. The QR25DE engine produces 121 kW (162 hp). This engine features cast steel connecting rods, a steel timing chain, counter-rotating balance shafts and an aluminum intake manifold. Unlike the QR25DE models released from 2007 onwards which include upgrade options such as; Larger diameter and simpler intake manifold, Balancing system, Strengthened camshaft and connecting rods, improved mounting, improved power and increased rpm.

• Vehicle X-Trail, Altima HEV, Sentra, Rogue, Frontier
• Engine type L4
• Fuel Gasoline
• Engine code QR25DE

The mechanical manuals of the Nissan group show all the data on adjustment and repair of engines belonging to this group. In some cases, the manual provides diagnostic assistance using a troubleshooting chart.

This diagnostic table is compiled based on the symptoms that can be found in a car engine. The Troubleshooting Chart walks an auto mechanic through the inspection process of each stepper motor system, providing the data and specifications that must be followed to resolve a motor's mechanical problem.

This engine produces 177 hp as standard, but on our cars (Teana, Murano, X-Trail) the engine is throttled to ~170 hp, you can flash it, knock out the catalyst and get about 10 hp on top. , but this is so banal. It would be more original to make a cold air intake, install camshafts from the Nissan Sentra SE-R Spec V, there is the same QR25DE, but with slightly more evil shafts, they will allow the engine to spin up to 7000 rpm (instead of 6100 in stock ), together with them we will install a direct-flow exhaust with a 4-2-1 exhaust manifold. These dances will allow you to increase the output to ~190 hp. and get a motor with a more sporty character. If you remove the balance shafts, you can remove about 10 more hp.