1985 Merkur XR4Ti AutomaticFACTORY OEM SERVICE PROCEDURE

Low Pressure Pump

The low pressure pump and fuel level sending unit are installed in the fuel tank as a single assembly. The pump draws fuel from the bottom of the tank and supplies it to the high pressure pump. The 2 pumps are connected by a 5/16" fuel line that extends from the tank fitting to the inlet side of the high pressure pump.

The end of the pump pick-up is enclosed in a nylon filter which prevents the entry of the fuel tank contaminants into the EFI system. The fuel pump is not serviced separately. The pump and sending unit are available only as an assembly. See Fig 1 .

Fig 1: Exploded View of Low Pressure Fuel Pump
G35450
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.