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p7100

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  1. TBerkey

    Need to replace the P7100 pump

    I need a replacement P7100 pump for my 1995 12 valve, manual transmission. Doe anyone have any feed back on Pensacola Diesel? Can anyone suggest a mechanic in North Florida in the St Augustine/ Palatka area? After owning the truck for 28 years I can not believe what I did, I put $90 dollars...
  2. Mike_0521

    12 Valve low power!

    Hello all. I will start with my truck specs as that always helps. Despite my username my current cummins is a manual. Rusty is a 1998 2500 215 pump with the NV4500. 360k miles. 53 block So, ever since i got this truck i have felt that it was low in power. Found many boost leaks and had the...
  3. T

    P7100 o-ring

    Is the following p/n correct: cummins 3969698? This should be the seal for the p-pump to the timing case. Is it a square ring or a round ring? I've seen different prices on the web with the same p/n, and I don't know what it should be. Should it be replaced when the p-pump gets removed? I...
  4. T

    P7100 tamper screw sizes

    What is the size/pitch of the tamper screw holding in the AFC housing? Size/pitch of the tamper screw covering the smoke screw? S/p of the one holding in the diaphragm? I'm guessing they might all be identical. Do folks replace those screws with (8mm) bolts or allen bolts? I'm guessing the...
  5. T

    Injector Sizes

    Since I'm in the market for some new injectors, I put together this list to help me compare all the variations out there. These are not flow rates, but rather the total area of the injector holes in square inches. These numbers come from pi*r^2*(number of holes). Stock = 5 x .010
  6. M

    Engine/Transmission (1994 - 1998) Need help thinking through IP options

    I appear to have the sticking barrel/plunger problem on a 1995. Has about 190k miles, automatic, just a stock work truck. So I'm pulling the pump to have it rebuilt or exchange it for a rebuilt one. I'm a little concerned that a rebuilt pump will develop the same problem eventually. I've talked...
  7. JKosten

    Engine/Transmission (1994 - 1998) 12v AFC Mods walk through

    After a lot of researching of how to modify and tune the AFC on my P7100, I have collected the following guide: The following modifications to the AFC may not be either emissions control approved or safe for the motor if done incorrectly! Adjust with caution and precision as anything falling...
  8. purdytj

    Archived spraying fuel at the filter assembly!

    Hi all, I suppose I'm another victim needing help with the "911" threads relating to fuel delivery... I've got a 1998 2500 with the 12-valve engine. I changed the fuel filter on it with a filter from Cummins Northwest in western Washington. When I did that I learned (by error) that I needed...
  9. Strokercummins

    Engine/Transmission (1994 - 1998) New Bosch overflow valve for P7100 pump

    Could i get some help. please? I noticed that the new Bosch overflow valve has a much smaller hole on the end of the valve. My old valve has a hole close to 3/16". Any ideas why they made the change? Thanks and have a good Christmas.
  10. P

    P7100 pump on Gen 1?

    I have a gen 1 with 250000KM - bad wrist pin on #4 cyl - but still drives well. Just won't leave town with my 5th wheel the way it is. I bought a 97 engine complete with a million KM on it - and a new 7100 on it. Crank, bore, etc all perfect. Had the head recon'd - planed, etc. Cam has some...
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