Hino J08C-TP, J08C-TR — TROUBLESHOOTING

1 page 1 Models J08C-TP and J08C-TR 3-1-14 ENGINE Symptom Possible cause Remedy Engine starts and stops Fuel lines clogged ......................................... Clean or replace fuel lines Air in fuel caused by damaged ..................... Repair fuel lines or replace fuel fuel lines or improper connection of lines and gaskets fuel lines Engine has low power Pump out of timing G Excessive advanced timing........................... Check and correct it G Excessively retarded timing .......................... Check and correct it resulting in loud knocking resulting in black smoke G Defective injection pump overflow valve .......

Repair or replace it G Feed pressure too low .................................. Repair the feed pump G Improper accelerator cable adjustment ........ Adjust it Nozzle faulty G Fuel leakage from nozzle holder................... Check and repair nozzle holder G Bad nozzle spray characteristic .................... Repair or replace it G Loosened adjusting screw in nozzle ............. Adjust it holder, resulting in low opening pressure G Nozzle pressure spring broken ..................... Replace it Pump faulty G Fuel leakage from delivery valve ..................

Retighten the delivery valve holder holder if it is loosened or replace O-ring if the O-ring is defective G Defective seat of delivery valve assembly .... Repair or replace it G Delivery valve spring broken ......................... Replace the spring G Plunger worn ................................................. Replace it G Large spread in fuel delivery ......................... Adjust it G Wear of tappet roller ..................................... Replace the roller G Camshaft bearing worn or broken................. Replace it G Improper adjustment of governor .................. Adjust it full load stopper screw