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Case Tractors Discussion Forum

case 188D diesel injector pump

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04-07-2007 12:17:38

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I seam to be having a problem with the diesel injection pump in my 580ck loader. A month or so I thought I ran out of fuel when the engine began to idel down then stop. I added fuel and then tried to start. I had difficulty trying to get it started but thought that it was because it was very cold at the time. Several days later I got it going but noticed that I had poor throttle controle. It would not idle I had to keep the throttle higher than I like. Very difficult to drive with high throttle. Tried to bleed the injectors again but no improvement. Now I have no throttle controle it has a high iddle but the throttle can be moved to any position, and no change. I have an electronic manual(on CD) but today when I went to look up how to rebuild the pump, or at least see what service can be done, I discovered that there is no information in the manual about the injector pump at all. Can anyone help me out???

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Tom (Ks)

04-07-2007 13:41:12

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 Re: case 188D diesel injector pump in reply to 68dozer, 04-07-2007 12:17:38  
Check your fuel flow to the fuel filter base first. If you have a full stream coming out, then remove the fuel line at the injector pump and check again. Your filters can be pluged, that can lead to poor speed control. If you have good fuel flow at the pump, remove the return line AND the fitting on your return side and check your speed control. Do this before you worry about the injector pump.

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04-09-2007 17:58:13

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 Re: case 188D diesel injector pump in reply to Tom (Ks), 04-07-2007 13:41:12  
Tom, thanks for the input. I checked the filters and the primary was rather dirty, I also ended up opening the top of the injector pump and found that the stop lever was gumed up and was not returning all the way. I cleaned it and it is runnung terific now. Thanks

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