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70 D problem

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Larry

09-01-2002 12:14:19




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I have a 1955 JD 70 Diesel. It has been sitting for quit some time. We just got it running. We replaced the clinders, head,and pistons in it. But it don't run quit right. When you start it. It runs all right untill you put a load to it then it seems to drop a cylinder and it takes a while then it will come back. When it drops the clinder it blows a lot of blue smoke out the exhaust. But it dosn't do it all the time. Do i need to just put a little injector cleaner in it or do you have any suggestions for me. thanks

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Clooney

09-01-2002 14:02:09




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 Re: 70 D problem in reply to Larry , 09-01-2002 12:14:19  
Larry, it could be tight valves on the low producing cylinder or an injection problem or a leaking injector line or possibly a very worn cam drive gear set or loose cam gear.
~It could even be the transfer pump isn't maintaining fuel pressure to the injector pumps, [look in the fuel strainer glass bowl with it running & see if the fuel is swirling around, if not, put a pressure gage on the fuel filter bleed screw hole & see if you have transfer pump pressure {15-25 psi}]
~If you have transfer pump pressure you might have cratered tips on the injectors or a faulty injector pump.
~If you can't find anything that stands out after re-checking the injector timing, valve adjustment [hot], rack setting, plugged air cleaner/snorkel, or leaking injector line you might want to pull the injectors & install them backwards & crank the engine & watch the spray pattern to see if both sides spray a fine mist & about the same amount [Caution, don't put hands in front of injectors as fuel could be injected through your skin]....

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larry

09-01-2002 19:34:18




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 Re: Re: 70 D problem in reply to Clooney, 09-01-2002 14:02:09  
Well we took your advise. And everthing seemed to all look good. So we decided to look at the gov. linkage, and it didn't look right. So we took the peace that bolts to the block off. And the rod was out of its holder. So we put it back together and it seems to work better. Thanks for the advise agine. We are thinking of maybe doing a little pulling with it. Do you know off any thing we can do toget it have more power?? Thank

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