Fuel Injection System - Diesel: Description

1985 Mercury Topaz LS, 2D Sedan, 2.0 HSECTION Description

The 2.0L engine uses a Nippondenso mechanical high pressure fuel injection pump. The injection pump meters an exact amount of fuel to the fuel injectors, as required by engine operating conditions.

Fuel injection pump is belt-driven, by camshaft, through rear camshaft timing belt. High pressure fuel lines deliver fuel from injection pump to injection nozzles mounted in the cylinder head.

A fuel filter/conditioner is located in the fuel line between the fuel tank and injection pump. A quick start and afterglow system is used to assist in starting when engine is cold.

RENDER: 1.0x

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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.