Please re-read what you have typed. 33 year old 92 engine. 1500 hours, never rebuilt. I'm no expert either, only been working on them my whole life.
Learned the hard way a few times. Owners leave the filters apart when the RO is not in use. Fill their water tanks. next day call me rather upset...
1500 hours on a 33 year old boat? Never overhauled? The cylinder liner O rings can't last that long on a shelf, half that time in the engine just...
