12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

leaky injector

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Old 04-12-2012, 03:28 PM
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Default leaky injector

so ive fixed about every problem except now i have a new one. 1 injector leaks out of where it sits in the block. im hoping its just an O ring. but any ideas what it could be
 
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Old 04-13-2012, 09:22 AM
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Torque the retainer nut down to spec. it might have worked loose a little. The o-rings are more of a dust ring and the seal is the copper washer that sits between the injector and head. Make sure its not the return line horseshoe washers and it could be leaking down from there.
 
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Old 04-13-2012, 01:56 PM
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The little banjo bolts that hold my return line where leaking and I thought it was the injectors leaking. I was able to get almost a quarter turn tighter on the little banjo bolts.
 
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Old 04-14-2012, 08:30 PM
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ill have to check that out been raining alot and no garage.
 
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Old 04-14-2012, 08:41 PM
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Just spray some brake cleaner on them and them with some air and watch for the leak. Good luck!
 
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