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Injector leak.


 
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DB885
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Joined: 08 May 2021
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PostPosted: Sat May 08, 2021 10:08 am    Post subject: Injector leak. Reply to specific post Reply with quote

My Daddy has a 1974 David Brown 885 that had sat for around 6yrs. We recently got it back to running. We installed a new injector pump and after having the injectors pressure tested, I had to purchase one new injector. Ive gotten the tractor running but now my problem is I can't get one of the injectors to seal between the copper washer. I have cleaned all the debris out of the head with alcohol and Q-tips. I have been very careful not to over tighten the injector mounting nuts when I initially install the injector but no matter what I do, I can't keep the fuel from leaking by the washer and up past the body of the injector. Any help in this matter would be greatly appreciated.
 
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Dieseltech
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Joined: 29 Feb 2012
Posts: 9843
Location: Indiana

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PostPosted: Sat May 08, 2021 1:34 pm    Post subject: Re: Injector leak. Reply to specific post Reply with quote

If the copper washer leaks you will hear COMPRESSION leak. The FUEL leak is probably the lapped joint BETWEEN the nozzle valve and the injector body, when that area leaks
it will be FUEL up and out the injector head hole. SOMETIMES the nozzle valve and injector body can be lapped to stop the slow leak, there's NO gasket there. I've seen
some that would not stop leaking even after lapping too..
 
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