D6D sleeve meter pump bleeding

Valves on the priming pump may be bad. Did you have the throttle control pulled back enough when you tried to start it?

That appears to have the constant bleed valve. Check and see that the internals are working.
[attachment=68123]Pump.jpg[/attachment]

[attachment=68124]Constant Bleed Valve.jpg[/attachment]

@ Rome KG.....yes, throttle lever right back

@Old Magnet - funny you should mention it but that was the very last piece I looked at before calling it a day ......it seemed to be in order....spring wasn't broken and the valve was the right way around and seating

You mention air bleeding back from the pump/s. Take the lines loose from the injectors and crank the engine to see if you are getting compression bleed back. Use a few drops of oil or fuel and look for bubbles indicating leakage.

@ O/M......you mean to indicate that compression gas is unseating the injectors?

Not unseating but leaking past injection valves and check valves or the capsules are not seating properly.....it happens, not often but has been know to happen.
You didn't state which model s/n D6D. I'm generally referring to capsule/pre-com injection, not direct direct injection.

OM....its a 20X 04340 (8A3204 arrangement) I believe its a 3306 motor

OK, so Direct Injection.
What do you have for fuel pressure?
If not compression back feed about the only other source for air intrusion would be transfer pump seals.
Your symptoms of priming pump seem normal. Should be some easy strokes until pressure builds to point where constant bleed valve opens.
Are you sure your getting full rotation of the sleeve metering shaft?

O/M.....well, there's no fuel pressure gauge fitted to this one.,.....just a blanking plug where one should live.

You mean the shaft that slides the barrels up and down the injection pistons?
It rotates nicely, the only thing I did notice on this was that on the "shut-down" position the action is positive, moving from idle to max speed the rack stay seems to sit freely - not a positive movement throughout the rev range realtive to the throttle lever, it does look like its the max speed (bearing in mind that we should never assume anything) my assumption is that the governer mechanism regulates the delivery openings throughout the rev range. 


[attachment=68133]D6 sleeve shaft.jpg[/attachment]