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

another delivery valve question

Old May 6, 2010 | 03:59 PM
  #11  
cumminspwr11's Avatar
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From: arizona
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no they hold in fuel, they are the green oil grade ones and i tore one and now fuel leaks out
 
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Old May 10, 2010 | 04:21 PM
  #12  
shortbusdriver's Avatar
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From: LeRoy WI
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Take the copper washers out.

The green o rings cost me $12 from a bosch dealer.
 
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Old May 11, 2010 | 09:23 AM
  #13  
cawhorses's Avatar
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From: Utah
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Don't forget to give your O-Rings some lubrication, some sort of Vaseline, or even dip them in a little diesel fuel. It doesn't need to be coated with the Vaseline, just enough that they don't look dry.
 
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Old May 11, 2010 | 01:18 PM
  #14  
FastCR's Avatar
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From: Livingston Montana
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they shouldn't be holding fuel, the point of them is purely to keep **** out.
 
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Old May 11, 2010 | 04:21 PM
  #15  
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From: Lincoln, CA
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well according to the guy at the local injection shop they DO hold fuel in them. he gave me six new ones, i put em in, and wa-la it stopped leaking fuel. and thats the only thing i changed so it must hold fuel
 
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