Whether equipped with a six- or eight-cylinder engine, every 1966 Ford Mustang engine has a single mechanical fuel pump. Although the pump is mounted against the side of the engine block, a metal arm on the back of the pump rests on top of a metal cam attached to the front of the timing chain. As the cam rotates, it moves the arm up and down and pumps fuel. Within the pump are several seals. The cause of a defective pump can usually be traced to these seals. Fortunately, installing a new Acme pump is a fairly straightforward process.
Tools Used: Small container, Pliers, Open-end wrench, Socket wrench, Gasket sealer, Fuel pump gasket
Mechanical Fuel Pump Installation
Position a small container underneath the fuel pump to catch any gasoline that drips out of the fuel lines when they are removed.
Loosen the clamp that secures the rubber fuel line to the fuel pump by squeezing the clamp's metal prongs together with a pair of pliers.
Slide the clamp away from the fuel pump.
Pull the rubber fuel line off of the fuel pump.
Rotate the integral nut on the tip of the metal fuel line in a counterclockwise direction with an open-end wrench until the line comes off the pump.
Remove the two bolts that secure the pump to the side of the timing chain cover with a socket wrench.
Pull the pump out of the timing chain cover.
Apply gasket sealer to a new fuel pump gasket then press the gasket onto the fuel pump.
Insert the fuel pump's metal arm into the side of the timing chain cover until the pump rests flush against the timing chain cover.
Install and tighten the fuel pump's two securing bolts with the socket wrench.
Position the tip of the metal fuel line against the fuel pump then rotate the line's integral nut in a clockwise direction with the open-end wrench until the nut is tight.
Press the rubber fuel line onto its nipple on the fuel pump.
Compress the metal tabs on the rubber fuel line's clamp with the pliers then slide the clamp onto the tip of the fuel line.
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