Long term follow up ... reminder 803 smoking and choking down at 50% load ... fuel tank dirty so cleaned and replaced tank, filters, injectors tested ok ... turned out to have broken rocker arm, bent push rod, popped hole in valve cover ... took a long time for the machine shop to work over the head (grind valves, replace guides, reface head)... HUGE thanks to Mayi Diesel for helping get all the parts needed. My mechanic got it all back together, manuals were very helpful even for a pro ... initial load test and the machine runs smooth. Smokes a little at 80% but not much, only see it against dark background ... I only got to 80 % load, need to add some more heater elements to my “load bank”
Revised ... when I read the gauge correctly hertz drop only 1.5 so within 3%. So far so good!
on on another note ... I also tested my 804, using just 2 legs for 120/208 ... it stays really smooth throughout load test. Well pump is the only motor I need and it’s specs are good down to 190v so well guy tells me it should be good ...
Many thanks to this Forum for your suggestions and support!
Al