I’d do a valve adjustment and retest
Clock had stopped at just 640 when I got it. Was told original hours until I realized it wasn't moving. You know. Father had it, mostly idle hours, blah blah blah as I helped place the hook in my own lip to prepare to jerk it myself. That was also after I made a trip 2 states away and back home to buy a descent tractor that wasn't beat all to heck and selling for twice as much.How many hours on the old girl?
Sounds like a legit answer here. This is my very first diesel. All new to me.I’d do a valve adjustment and retest
Recommended at 600 hrs.I haven't touched the valves on this tractor since I got it. Might just be the ticket.