P7100 Question?

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I was installing the 1/8" pipe fitting in the intake manifold for a boost gauge when I noticed something odd? On the engine side of the injector pump below delivery valve #6 their is an OPEN HOLE #ad
that looks to be threaded for 1/8" pipe. Should this hole have a plug in it??? It appears to have been open for a long time due to the corrosion on the treads. I hope this condition will not have a detremental effect on the life of my $$$$. $$ pump?

Centerforce clutch is installed, cat's in the rafters, K&N air filter, gauges going in now, next month a nice HEALTHY fuel plate! #ad

 

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Rebel,

I just went out and looked at mine. There is a clear plastic plug in the hole. Its knurled so it looks like it meant to be unscrewed with a thumb and forefinger. I cant get my fingers in there to unscrew it. I was going to pull it. It looks like a dust plug of some sort of a test? port for something.


My Cummins Engine Parts catalog is not showing a view of the pump from that side. The D/C srvice maunal won`t say anthing, they don`t want their techs touching it. Just R & R instructions.
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Bill R
94 2500 SLT 4x4 5 Speed, 3. 54 LS, JRE 4" exhaust, Autometer Pyro, Boost & Water temp gauges, Bosch 215 HP injectors, Timing @ 14. 7 º, JRE Stage III #4 plate 270/675, AFC spring kit, Scotty Air, Bully Dog Propane Injection, Roadmaster Active Suspension, Optima Red Tops, Geno`s Exhaust Blanket,Espar Heater (won it!), Synthetic lubes throughout.



[This message has been edited by HEMI®Dart (edited 10-19-2000). ]

 

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HEMI®Dart, Thanks for your reply. I'm thinking of putting some sort of plug in this mystery hole. Was wondering if it needs to be vented? Anyone else have any input?

 

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I thought someone would know for sure what the hole is for.

Joe D or Piers would know

 

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Looked at mine,no plug,has a bottom to it. I think it more than likely is for a bolt when the pump is used in another application.

 

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Illflem, I believe you nailed it. I tried to start a 1/8" pipe plug in the mystery hole and it would'nt go. Mystery solved!