my &#039;53 88 std diesel went to another person and thru a divorce i got it back. it ran great when i sold it but now i finally got it to idle ok, but is hard too start cold, white and gray smoke when first cranking, ether is needed &amp;amp; smokes some while at idle.  i have advanced pump one tooth and retarded 1 tooth, seems to run best at correct timing. i am nervous because the head is nice and clean and perhaps the previous owner had the valves ground, which i understand is not advised. low compression may be the problem? i have adjusted the valves, cleaned the power cells.  in summary, it smokes like crazy at all speeds above idle and will not build any rpms.  i may need a new head? or injector pump.  i may be at a point where it is beyond my mechanical abilities. i am interested in locating someone to look at the tractor and do whatever it takes to make it run great again so i can pull in our club, any leads will be appreciated. i am in northwest new mexico anyone within 300-400 miles would work.  help!