Isuzu 4HK-1 Engine Service Manual
The 4HK1-TCN is a direct injection turbocharged engine of 5.2L capacity. Applications include the 2006 Isuzu NPR400.
The 4HK1-TCC is a direct injection turbocharged engine of 5.2L capacity. Applications include 2008 Isuzu NQR500.
The 4HK1-TCS is a direct injection turbocharged engine of 5.2L capacity. Applications include 2005 Isuzu NQR500.
The 2005 model year NPR/NQR truck, the 4HK1-TC inline 4 cylinder engine replaces the 4HE1-TC engine for advanced exhaust emission countries. The 4HK1-TC engine has been newly developed on the basis of previous 4HE1-TC engine, with additional features including the employment of four valve mechanism per a cylinder that are operated via a single camshaft, common rail fuel injection system, water-cooled exhaust gas re-circulation (EGR) system, and the change of combustion chamber form. The larger engine displacement and the common rail fuel injection system have resulted in an increase both in maximum output and torque, and met Euro 3 emission regulation standard. Most conspicuous items are listed below.