Help!!!! Yanmar 1601D Injection pump not pumping from one cylinder!

[thepumpguysc]

Yes, there are 2 ways to put it in.. if you have it in backwards, it will pump in the SHUT OFF position..wont pump in the run position..
it sounds like the rack has fallen.

 

[clemsonfor]

Yea I knew I remember you saying you ran ot and I knew it was lean but couldn't remember. 100:1 or 150:1 I know still dies the fuel pretty good so you know that oil is well in there at that rate.

I will keep that in mind. I probably will stay in that 150-300:1 rang. And yes I know that's a wide swing

 

[jbiusti]

Ok I got back on the pump today I took the plate off the side of the governor that you can peek through to browse at the rack. The rack was hooked up to the linkage correctly which is leading me to think that I put a plunger in backwards? Any thoughts on this thepumpguysc? I've got the pump pulled out again. If there's any body that can tell me which way is not backwards that would be awesome. Thanks!

 

[thepumpguysc]

Your not going to be able to see all the way to the end on the block inside the gov. mechanism..
The rack WILL hook up to the pump but has fallen off the spring at the OTHER END..
IF you want to recheck your work inside the pump.. the helix/cut on the end on the plunger goes in, facing OPPOSITE the control rack of the pump.

 

[jbiusti]

Ok now that you say that about the helix that is what I think is wrong. I will admit when I put the pump back together I did not pay attention to that so I'm thinking that is what the problem is.

I checked the linkage out and the spring that connects to the linkage and everything there is intact.

I have the pump back out I will tear it down again and put it back the way it should be and go from there. Hopefully I can get back to it this afternoon.

 

[clemsonfor]

You get this thing back working, this is the first one I remember seeing done and successful by a member here that is not a pro. You will now be a resource on this. Take any pics?

 

[thepumpguysc]

Its either one or the other.. Rack or plunger..
When you get it back together, leave the lines OFF.. crank it & LOOK at the fuel delivery coming out of the pump..
Then Pull the stop & MAKE SURE ALL OF THEM shut off BEFORE hooking up the lines..
THEN hook up the lines AT THE PUMP & loosen the lines AT THE INJECTORS & crank till fuel squirts out THERE & tighten..

I hope the class is taking notes..

 

[careyo63]

I hope the class is taking notes..

I know I am professor thepumpguysc.....

 

[jbiusti]

I will I've got the pump back apart I need to pick up some o-rings tomorrow. Hopefully in the next few days I can get this thing back together. Thanks for all the help fellas!

 

[jbiusti]

I will take pictures on it this week I will get some with the pump apart as well. I hope I can get this thing back going. I've put some time into it as well as $$$. Not ready to give in quite yet!