Glad you're back.
That's really the least of your concerns with this engine. I posted this in response to your last question. I didn't get any response at all.
JoeIsuzu wrote:
Take a look at this topic, I listed some really important maintenance things that should not be neglected –– especially when the history of the truck is unknown.
viewtopic.php?f=20&t=30256&p=219602#p219602But to try to answer your question -- today's ULSD fuel has been in use since when, 2006? It typically caused old pump seals to leak. That ship has already sailed.
As far as I kmow, old pumps either leak, or they've already been overhauled. A full overhaul by a competent shop will set you back about $600, if you do the removal and re-installation.
Jack
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'83 Isuzu P'up Diesel LS - Original Owner
JoeIsuzu@IsuzuPup.comIsuzuPup.com