Ford 3910....no fuel at injectors. Please help!

[TractorTech]

It's that end, but the head is ahead of the primer. The primer is at the very back.


#1 is the cover, 14 the vanes. Also, inlet filter in that cover, but not likely the problem.

 

[TractorTech]

<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=376402"/>
There is the pump and the tag with the numbers. Can I try just taking loose the four small bolts there to the left and see what's going on?

That's it.

 

[Coyote machine]

FWIW, Injection Pump timing is CRITICAL to proper fuel delivery and the tractor running correctly without smoking, etc.
diesel fuel injection turbo, Conestoga Diesel Injection injector fuel pump turbocharger willow street pa Willow Street, PA Home is who Kioti tractor owners are referring people to who have broken I.P s. They seem to have parts and knowledge about hard to find parts/pumps etc., and in many cases can help with diagnosis, advice on whether to rebuild or replace with rebuilt or new or rebuild one's original pump. Contact them about what to do next rather than guessing or removing the pump prior to knowing how it has to be set up on your tractor before pulling it.
They're located in Pennsylvania.

 

[Fireman 9731]

Can I take the end cap off while the pump is still on the tractor? Will all the guts spill out or will it be fairly manageable?

 

[Coyote machine]

Suggesting again, seek professional advice before proceeding further.

 

[Fireman 9731]

I agree, I'm in over my head on this. But at this point, I have a non-running tractor with a presumed bad injection pump. Worse case scenario, and most likely, I have to have it professionally rebuilt for about $1,000. Best case scenario, I take the end cover off, and the inlet strainer is clogged. Easy fix, and it only cost me my time.

I'm pretty much going to have to have it rebuilt anyway, so could I really hurt anything any worse just by checking?

 

[Brutixx]

I understand that these pumps are have very fine specs that need to be taken into account when rebuilding but they are not the huge confusing nitemare I see posted on forums that require special tools
They require patience and an overhaul kit with a rebuild manual all of which I have
1000$ for a rebuild is a joke you can get one new for 5-600

 

[Fireman 9731]

The more I think about it, the fuel shut off shaft may be rotated. Before I took the cover off, I worked it back and forth with a wrench a few times to make sure it was free. Once I took the top cover off the fuel shutoff valve may of been stuck, I don't know for sure but I worked it back and forth several times to make sure it was free. So if my fuel shutoff valve is now operating correctly, but the shutoff shaft is not exactly where it should be, so once I put the top cover back on, I may be inadvertently turning the fuel back off by the shaft not being in the full forward position. That might make sense. I have a hard time believing my injection pump went completely out all of a sudden on a machine with relatively low hours, well maintained, and not a single symptom before.

Brutixx, What is your source for pumps?

 

[TractorTech]

Can I take the end cap off while the pump is still on the tractor? Will all the guts spill out or will it be fairly manageable?

You don't have a lot of room with it on the tractor, but yes, it can be taken off. The 'guts' are just the vanes and oring, so no. Clean the area around and above the pump very well. The vanes are fragile.

 

[TractorTech]

The more I think about it, the fuel shut off shaft may be rotated. Before I took the cover off, I worked it back and forth with a wrench a few times to make sure it was free. Once I took the top cover off the fuel shutoff valve may of been stuck, I don't know for sure but I worked it back and forth several times to make sure it was free. So if my fuel shutoff valve is now operating correctly, but the shutoff shaft is not exactly where it should be, so once I put the top cover back on, I may be inadvertently turning the fuel back off by the shaft not being in the full forward position. That might make since. I have a hard time believing my injection pump went completely out all of a sudden on a machine with relatively low hours, well maintained, and not a single symptom before.

Brutixx, What is your source for pumps?

The fuel valve scenario makes the most sense for a sudden problem. Did you take the lever off of the shaft on top of the pump at any point to see whether it is aligned?
Once you took the cover off, then yes, there is a chance that you didn't get the shaft nib lined up with shutoff link, but unlikely that was the original problem.

The one thing that can cause sudden pump failure, at which point it needs to be replaced, is a shocking of a warm/hot pump with cold water while washing the tractor. Then there is nothing you can do but replace or rebuild.