Tractor Repair: Farm Tractor, ferguson to30, massey ferguson

Question
You said no a Massey-Ferguson expert,but you Know a lot about old tractors.My is a Ferguson TO30 1953 I think.Won't start won't fire
up.It use to start after 3 or 4 cranks.Carburator foaded eazy.I've
rebuid the carburator, changed plugs,coil,distrib.rotor,cap,new
battery.rebuild starter.I get good spark at coil and wires,still
won't fire with starting fluid or gas. Timing seems to be ok. com
pression is low on all cylinders,but it use to start. what do you think is causing it not to fire?. I'm a car mechanic but no a tractor expert. I would appreciate your help

Answer
Hello,

  Weird that it won't even fire on starting fluid if you have verified that you have spark at the spark plugs.  Make sure the firing order is correct.  If the compression is low, it is going to be hard to start no matter how well it's tuned up.  I would suggest checking the valve clearances also, and adjust if necessary.