To install a fuel pump in a 1998 Infiniti Q45, first ensure the vehicle is on a level surface and disconnect the negative battery terminal. Remove the rear seat to access the fuel pump access panel, then unbolt the panel and disconnect the fuel lines and electrical connectors from the pump. Replace the old pump with the new one, reattach the connectors and lines, secure the access panel, and finally reconnect the battery. Always check for leaks before starting the engine.
The fuel pump is in the fuel tank and the fuel tank will have to be removed to access it. If you do not have the skill or equipment to do this properly, I suggest taking it to a shop.
Remove fuel tank for access
1995 Nissan Infiniti fuel pump relay located
YES you do.
you will have to drop the tank and remove the pump unit.
Mounted in the fuel tank.
Drain the fuel from your fuel tank. Remove the fuel pump retaining plate. Remove the fuel pump retaining bolts. Remove the wiring harness from the fuel pump. Reverse the process to install the new fuel pump.
I am not sure on a 1998. However on the 2000 I 30 it is in the gag tank and is part of the electric fuel pump. According to the manual it does not need changing
In the fuel tank
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I believe that this filter is a perminant part of the fuel pump. You can install a 2nd in line if you want but there is no need
Fuel pump is inside tank. Drop fuel tank and replace through cover and re-install. Make sure you replace fuel filter at the same time.