Replace fuel pump at what mileage

I am just trying to get ideas of when and if u had to replace your fuel pump and what lilacs are you at I’m at 217xxx and i think my fuel pump is on it’s way out almost Didnt start early plus studder on accelerations

The shuddering is most likely a plug or the main fuel relay or bad censer. The problem with it not wanting to start can also be the relay as well as tune ups needed. The pump just don’t act up,it just go’s out all together,so if its still working,don’t replace it. I would also change out the fuel filter if you haven’t already done so.

All the tune up parts are relatively new since I did my swap maybe 15 k on plugs wires. Is it possible that the main relay is working intermediately thanks for the advice

highly doubt its your fuel pump…have you checked your cap and rotor??? or your fuel filter…the only way you will have a bad fuel pump if it takes long/hard cranking to start…thats due to the checkball in the valve which is located on the outlet line for fuel to reach your engine…that over time gets dirt and crud all around it which keeps it stuck until there is enough pressure in the line to move it… yes the mfr can work intermit. but you will here excessive clicking from on to offf…