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This guide will go step-by-step in how to replace the fuel injector lines for a 1977 Datsun 280z. When these fuel lines rot or break, fuel can leak into the engine compartment, causing the engine to not function properly and can lead to the car to catch on fire. The fuel injector lines are important in maintaining this classic car. Hopefully with this guide, it will be easy and painless to replace these fuel injector lines and get the Datsun 280z up and running properly.
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Release the hood latch by pulling the knob within the cab towards you.
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Reach to the middle of the hood and pull the lever upward to release the hook.
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Extend the hood upward to view the engine.
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Remove the spark plug caps from the spark plugs by pulling straight towards you.
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Label each spark plug cap with masking tape corresponding to the piston it belongs to.
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Set the spark plug wires aside to open up your work area.
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Remove the breather hose above the fuel rail to open up room for you to work.
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Using the 12mm socket and ratchet, remove the four bolts anchoring the fuel rail. Two bolts will be near the injectors, one on the front of the engine, and the last on the other side of the engine.
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Remove the bracket that holds the injector plug-in wires to the fuel rail.
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Loosen the clamps that attach the fuel line to the fuel rail using the Phillips screwdriver.
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Slide the clamps down toward the fuel injector to allow the fuel rail to slide out.
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Spray the silicone where the line is still attached to the fuel rail to lubricate the fuel line.
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Take the pick and loosen the hose from the fuel rail. Slide the pick between the fuel line and rail.
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In a circular motion, move the pick around the inside of the hose.
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Carefully pull the fuel rail out of the fuel injector lines until it is completely out.
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Pull the clamps off the fuel lines.
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Use the box cutter to cut the fuel line from the injector ring to the open end of the fuel line.
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Using the pliers, grip the fuel line and twist it off of the injector.
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With the hose cutters, cut off a piece of the new fuel injector hose that is the same size as the old fuel lines.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Good instructions including visual. Question, I have a 1980 280 ZX on which I had to have the fuel tank rebuilt. When replacing it I removed all the old hoses, fuel pressure regulator, and relief valve. I should have made better notes or taken pictures. I am uncertain where the relief valve goes as I'm reassembling. I am purchasing a new adjustable fuel pressure regulator valve which will be relocated in the engine compartment. Any thoughts would be appreciated. Thank you.
Gary
