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I have a HMMWV pump on my Crown of Thorns M1009. I had the same sound you are experiencing. I had to turn the adjustment screw on the side lever that runs along the pump to the bottom. I had to take that out 2 turns and then adjust as needed. You do not want to run it with that sound that is...

The cover will slide towards the back of the engine when you remove the 3 screws from the top of the pump cover. Just let it slide back and remove it by lifting it off and out. When you are putting the CUCV pump cover on set it at the rear of the pump and slide it front gently and install the 3...

Correct it is a direct swap. I have a HMMWV pump on 2 of my vehicles. The top of the pump and the pin on the throttle shaft for the shift modulator was all I had to change. Been a while but I think that was all.

Personally I would not put that in line fuel filter on. that is me. I am hard headed and think about the reasons pros and cons to everything. I say they lasted 30 years as is. Why change it now? That is just me. I just maintain what I have and keep it going as designed. Worked well for me for so...

My vote if it matters is the injection pump. But if you go that route drop the tank and change the fuel sock first. I would recommend everyone change that fuel sock that has never changed them. I posted pictures here they look bad at this point if they have never been changed. It is an AC Delco...