Hi All,
I am new to this Forum, but after looking at all the posts here about different jackaroo issues, I hope you guys maight be able to help.
I have a 1989 4Jx1 3.0 TDI with 210,000km and it is also running on Gas. The car has recently become quite gutless where it is sluggish and un responsive at the top end (especially when approaching even small hills) It has always been serviced regulary and the major services has been done. The car runs quite smooth with no sputtering or misfire just lacking top end power. The Turbo was my first suspect, but that has been checked and it seems to be working fine.
I have downloaded all the isuzu manuals and checked for MIL codes (of which there are None). Just had it serviced at Holden hoping they might find something when they connect up the Tech 2, but they also claim no codes were returned. The Oil, Air and Fuel Filter were replaced in the service. After spending an hour trying to diagnose the problem and finding nothing, I asked them to stop as I don't think they have anyone who really knows that type of engine.
The only thing they did find was that the Fuel Pump "High Presure Oring" was leaking oil at the seal. They didn't believe that this was the cause, but my understanding of how the engine works using presurized oil to run the injectors I wanted to get another opinion.
Any opinions or ideas would most grateful. Does anyone know of a mechanic in the Melbournes north that works on them?
Thanks
Peter