2007 Isuzu N-Series Service and Repair Manual

Diesel fuel leaks top the recall record for the 2007 Isuzu N-Series. NPR, NPR HD, NQR and NRR cab-overs run the 5.2-liter 4HK1-TC turbodiesel with single overhead camshaft and four valves per cylinder, and the NPR and NPR HD were also sold with the 6.0-liter Vortec V8 gasoline engine. This service and repair manual is tied to 2007 trucks, with procedures, specifications, torque values, wiring diagrams, diagnostics and maintenance schedules for fuel supply, lubrication, brakes, steering and cab electrical systems.

Engines covered

• 5.2L inline-four turbodiesel — SOHC, turbocharged, diesel
• 6.0L V8 — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door tilt cab chassis

Trims covered

• NPR
• NPR HD
• NQR
• NRR

Known issues on the 2007 N-Series. Four recalls are on federal record. On diesel trucks, fuel can seep from the pipe at the supply pump's upper or lower port, and under-tightened oil pipe bolts can loosen and leak oil until the engine seizes. On gasoline NPR and NPR HD trucks the fuel tank may corrode and leak. Trucks with the optional oil pan heater can also overheat the extension cord where debris fouls the plug. NHTSA logs seven owner complaints, mostly about the fuel system. The manual covers the fuel and oil line torque values these fixes depend on.