Fuel pump

[Nick_e30]

My car needs the fuel pump to be replaced .im also planning on doing an m50 swap over the winter. Is the fuel pump something i should do before the swap or does it not matter

[7pilot]

it is up to you.
If you have to diagnose start/run problems after your swap, wouldn't it be a benefit if you could rule out the fueling issue that already exists?

m

[Kershaw]

That's quite the question to ask if you're planning on undertaking an m50 swap. Best of luck.

7pilot has a great point.

[jlevie]

+1

Do the pump(s) now. A pump failure could leave the car stranded somewhere.

You didn't say what year the car is. If an ETA or early 325is there will be two pumps. A lift pump in the tank and an external high pressure pump. Later cars have only an in-tank high pressure pump. Change the filter when you replace the pump.

[Nick_e30]

89 325i vert , filter has been changed recentlely

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