WD45 Diesel hard to start

Need some advice on WD45 Diesels as they are new to me and rare in Australia. Tractor had been sitting for 12 months so the diesel was foul (really smelt bad) so I drained the tank and all filters. With fresh diesel it took about 4 nights this week of cranking until the starter was hot to bleed all the old diesel out and get fresh diesel to the injectors. We finally got it running last night after putting a lot of heat into manifold with propane blow torch and the electric heater ( we didn't use ether to get it going). Popped from a couple of cylinders then took off. Ran really well considering it has sat for 12 months and that we had all the lines off at the injectors to get clean fuel through. Ran it for around 30mins to get it nice and warm and a few laps of the yard. There was a few little leaks on pipes into injectors so we tightened them up. Looks like a slight leak under the pump that pumps up to last 2 filters.

Pulled it back into the shed and shut it off on the lever. Decided to restart it and it wouldn't run. It didn't even pop on any cylinders.

When it was running the pulse on few of the injector pipes seemed stronger than others and a few of the injectors felt really hot like #5. #1 & #6 injectors felt cooler. 

Does anyone have thoughts on next thing to look at?

Pic below is the tractor in question

Thanks Mack, was thinking that. Any tricks with overhauling these that are different to whats listed in the shop manual?

Cheers, Richard 

Yes it is, from the Polk sale last September. Do you know some history on it?

Cheers,

Richard

Thanks for the info

Thanks. I have something similar to seafoam here in Australia. ATF? not sure what product that is? 

Okay so you run seafoam and ATF in the diesel to clean system out? What ratio?

On your WD45 Diesel, I see you have a new hose and looks like it is hydraulic line from here.

 Some time back there was a discussion on the forum about the rubber hose on some injection pumps, can't remember to which pumps, if it was for the PBS pumps or for the Roose-Masters as used on D15, D17, D19.   But it was important that it had a rubber line there so that it would act as a pulse line... or an accumulater to expand a little bit and then would force fuel into the system when the ports opened in the pump. 

 I hunted for a long time for that thread and can not find it in this site's search engine nor in google's search engine to find the particulars on it.  Maybe somebody else remembers it, or knows where to find the article but the fact was, it was important to that one pump in the system. 

  Now which system is the question. I can see it apply to the roose-masters pumps because they have little blades for low pressure pumping of fuel through the secondary filter,  But also feel like the article pertained to the American Bosch DB pump even tho it has a gear pump for pumping the low pressure fuel.

 Was just thinking here, maybe the fuel system had some cleaner in it for cleaning out the varnish and crud in the system and the cleaning agent has gone bad and gunked the system up worse... thus giving you the terrible smell? Just a another thought. mmm, Could that have been soy-diesel in it? 

  The old diesel fuels had sulfur and other substances in it but the new fuel has a lot of cleaning agents and no real lubricants like the old fuel had, maybe add some 'additives' to condition the fuel, maybe a small amount of oil ?

  Good Luck in finding the cause of the hard starting.

The Model 100 on IH tractors is the only one I'm aware of a "special" hose is required on, but I'm sure an 8000 series AC would be affected the same way, as those seem to be troubled with lazy yet flutter prone governing anyway. Sounds like the PSB has a worn out head, and that can be rebuilt and saved, though it takes about a year to get it back from rebuilding. Once they seize, it's not savable anymore. Those PSB pumps and the lack of any hard parts for them makes them a thorn in the side of us fuel injection shops. Good luck!

Thanks everyone for your help. Given me plenty to think about and a good plan of attack.