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1989-1999 Mitsubishi Eclipse Turbo 4G63 Hi-Flow Fuel Rail Installation Instructions

October 16th, 2009 · No Comments

The installation of this Fuel Rail Kit requires the removal and installation of fuel system components. Improper assembly/installation may result in bodily injury or property damage. If you are not qualified to perform this installation, please refer the installation to a professional. Read and understand these instructions before attempting to install this product.

1) Getting started
a) Make sure vehicle is parked on a level surface.
b) Set parking brake.
c) If engine has run within the past two hours let it cool down.
d) Clean area around the fuel rail so that dirt cannot get into the engine.
Note it is recommended to:
• Replace all cushion rings, seal rings and fuel injector insulators when fuel rail is disassembled.
2) Relieving fuel pressure
a) Disconnect the fuel pump harness connector. This connector is located at the rear of the fuel tank on 1989-1994 Eclipses. On later model Eclipses, the fuel pump harness connector is located under the rear seat cushion.
b) Start the engine and allow it to stop by itself. Turn the ignition key to OFF.
c) Disconnect the negative (-) battery terminal.
d) Re-connect the fuel pump harness connector.
3) Stock fuel rail and injector removal
a) Remove the two bolts mounting the high-pressure fuel inlet line to the fuel rail. Wrap a rag around the fitting and pull it clear of the fuel rail.
b) Remove the two bolts mounting the fuel pressure regulator to the fuel rail. The rail will need to be repositioned before the regulator can be removed due to a lack of clearance with the cam cover.


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