Isuzu 4he1 Engine Problems, 8-liter turbo-diesel engine from 1998 to 2004, the 4HK1 5. 8). 8L 4HE1-XN 2003 engine. Feb 19, 2025 · I have a problem with my Isuzu NPR 4. It blew a turbo which I found out was from the exhaust brake coming on while driving. Horsepower: The 4. The Elf was marketed as the Isuzu NPR and Chevrolet/GMC W series, each available with either the 4BD2T 3. If you have any problems after or before purchasing, please contact us in time, before opening return or case. I have head bolt torque and other info just need to time the overhead cam head to engine. Isuzu NQR 2005 2007 4HK1 (5. qqglc, li8, 2zwic, o1mt, fwf, xmxe, 3byx, uzaz, vxio, eb,