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Massey ferguson 165 fuel injectors

P

Paul165

New User
Hello I am new to this forum and I have a question about fuel injectors on my Massey ferguson 165. It has the AD4-203 Perkins diesel. I over tightened the banjo bolt on the # 4 injector as it was leaking. I ordered a new cap washers and bolt to replace it. So my question is do I need to pull the injector out to replace the cap or can I replace it with the injector installed? Does the cap thread on the pressure adjusting screw? I have not received the parts yet but probably next week I'm guessing. Any help would be great thank you very much.
 
The top cap is what locks the adjusting screw in place after setting the opening pressure. Would be best to pull that injector and recheck the pressure before installing the new cap. While it could be changed on the engine, you would not know for sure if the screw turned, changing the pressure setting.
 
(quoted from post at 18:54:53 02/20/17) The top cap is what locks the adjusting screw in place after setting the opening pressure. Would be best to pull that injector and recheck the pressure before installing the new cap. While it could be changed on the engine, you would not know for sure if the screw turned, changing the pressure setting.
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Thank you for the reply. I was Afraid of that. I guess I will pull it and take it to a shop to have to them do it so the pressure is correct. Although I don't have a clue how old the injectors are maybe I should put new ones in it?
 
(quoted from post at 20:46:40 02/20/17) Should not need complete injectors, they have separate tips. Have new tips ordered for some Ford injectors in for repair now.
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I'm thinking it should be ok the tractor runs well. I don't think it needs new nozzles. does the injector pressure need adjustment over time or is the pressure set once and it's good? Maybe I should pull all the injectors and have them reset to ensure each one is even.

Paul
 
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