Kevin Berger Posted November 28, 2020 Share Posted November 28, 2020 Hello all, I am new to this site and new to the "Mack world". I have done many John Deere restorations , work on trucks everyday but never on B models. We got this 1965 B61S home yesterday and the previous owner in the last few months tried to start it after sitting many years didnt realize that water got into the fuel tank through the sending unit gasket. We drained the tank, new filters, drug it around and it tries to run on either but isnt getting fuel. I blew the line out from tank to primary filter. It seems like the pump isnt working or something is stuck in the fuel shut off. I would like to get it running before it gets cold so If there is water in the system noting will freeze and get damaged. Does anyone have any suggestions?? Thanks!! Quote Link to comment https://www.bigmacktrucks.com/topic/65088-b61s-no-fuel/ Share on other sites More sharing options...
h67st Posted November 29, 2020 Share Posted November 29, 2020 You could take the lift pump off and see if the check valves look good. Quote Link to comment https://www.bigmacktrucks.com/topic/65088-b61s-no-fuel/#findComment-464548 Share on other sites More sharing options...
Kevin Berger Posted November 29, 2020 Author Share Posted November 29, 2020 Is that on the back under the primer pump? Quote Link to comment https://www.bigmacktrucks.com/topic/65088-b61s-no-fuel/#findComment-464565 Share on other sites More sharing options...
terry Posted November 29, 2020 Share Posted November 29, 2020 Screw the primer pump off, one is under there, other is under a screw cap next to it. terry Quote Link to comment https://www.bigmacktrucks.com/topic/65088-b61s-no-fuel/#findComment-464570 Share on other sites More sharing options...
Kevin Berger Posted November 30, 2020 Author Share Posted November 30, 2020 Pump good, check valves good. Im thinking it has something to do with the fuel shut off. I guess I will have to pull the inj. pump. I read the pump can only go on one way??? I think I need to remove cover on front of timing cover and remove gear to get it out of the housing?? What about timing? Quote Link to comment https://www.bigmacktrucks.com/topic/65088-b61s-no-fuel/#findComment-464606 Share on other sites More sharing options...
need4steam Posted March 6, 2021 Share Posted March 6, 2021 Have you made any progress? I just bought a B61sx that we could get it to run on ether but not diesel. I had primed the injector pump but couldn't get fuel to the injectors. I took the side plate of the side of the injector pump and all six plungers were stuck up. After a bit of "love" got them free. Sure is convenient to remove the top fender plate for better access. While I was there, I primed the injectors from inside the pump. After that we pulled it and came to life immediately after sitting at least 15 years. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65088-b61s-no-fuel/#findComment-470138 Share on other sites More sharing options...
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