Ray,Before you do anything else to the pump, make sure your batteries are in good shape, it sounds like they may be wearing down as you are cranking.
Next, are you using the glow plugs? If so how long?
You might need them for 30 seconds min.
If that doesn't help we may need to verify the glow plugs are working.
Also, make sure that while cranking the IP throttle linkage is lifting fully upward and not binding up on the sheet metal or anything. Have someone push up on the linkage with a finger while you are cranking to verify it is fully upward.
Both batteries are new 27 series larger than needed .
Powered glow plugs for 1 minute
After several attempts now no smoke.
IP throttle linkage moves up about an inch when I energize starter.
I'll have to check glow plugs but still may be a fuel issue.
I worked carefully and straightened spring like it was before I got bent.