Isuzu 4JJ1 engine workshop manual vol 2
This manual describes the service procedures for the 4JJ1 diesel engine (Interim Tier 4 compatible).
This manual consists of the following sub-sections.
1C Fuel System
IH Aux. Emission Control Devices
This is a high quality manual and covers mechanical repair and rebuild. For electrical diagnosis, function and repair engine technical manual volume 1 is listed on my site, link below.
Volume 1 link
Engine manual 1 and 2 are listed together at