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Thank you. Now to upgrade the air system to meet dot specs!

Well, I went a step further. I got rid of the canister fuel filtration system, and installed a spin on setup. I also replaced both of the rubber fuel lines, as well. She starts up great, now! I have attached a pic of the filter and mount numbers.

Not yet. I will on Sunday.

I finally got my overflow valve and installed it today. Now it starts! Thanks for the info. For all that read this; the P-7100 pumps ARE the same as the MW, for the overflow valve. The one I used is for a 95-98 5.9/8.3 with the P pump.

Cummins gave me the part # 3963593@345.00. #3912887 is the gasket. A tork unit is on the way.

Well, I talked to Cummins. They want 345.00. Mack wanted 175.00. I bought the best engineered one for a 5.9 for 50.00. if it doesn't fit, I can always resell it.

Yes. I've read all that, and googled all that, and read every item that came up. Every item says p-7100 pump for 5.9. no place did it say for mw pump, nor for 8.3. Your the first person to state that. Thank you.

I spent over two hours today, trying to find an overflow valve. I can't even find a listing for one. A ton for the 5.9, but none for the 8.3. I can't even get Cummins to answer the phone, nor return a call.

Thank you very much. I believe that it is in the injection pump. Nothing leaks back to the tank, and it is not the solenoid.

Not sure what the FSOV is, but I assume it is the shutdown solenoid. No, to that and wiring. No to cranking. No to restriction and idle. Like I said, it acts like it was run out of fuel. After is starts and runs for a while, you shut it off and try to restart, the same thing. The overflow valve...

I have a 91 with the 8.3 in it. Lately every time I try to start it, it will crank over till the batteries are dead. It acts like I ran it out of fuel. It has a new transfer pump, and I crack the banjo fitting on the injection pump inlet loose, give it a pump, and it squirts fuel. Like I said...