The 1987 Jeep Wrangler uses a mechanical fuel pump to move gas from the fuel tank to the engine. This means that the fuel pump attaches to the engine block and is not located inside the gas tank, as it is on most vehicles. Therefore, you don't have to remove the gas tank to replace the fuel pump, making this job fairly easy to complete. When replacing the fuel pump, make sure your Jeep is not around any open flames or cigarettes.
Tools Used: Wrench set, Shop towels
Replace a Fuel Pump
Lift the hood and prop it open. Locate the fuel pump on the passenger's side of the engine block toward the front. The pump has a steel braided line and a nylon plastic line attached to it. Use the replacement pump as a visual aid.
Unscrew the fittings that secure both hoses to the fuel pump using a wrench. Have a shop towel handy as some fuel may drain from the line or pump.
Remove the two bolts that secure the pump to the engine block. Place the new pump onto the engine block and secure it into place using the two bolts and wrench.
Thread the two hose fittings onto the new pump using your fingers. Tighten the hoses with the wrench.
Tips & Warnings
When the fuel pump fails, it could send fuel into the oil pan. Remove the oil dipstick and smell it. If you smell fuel in the oil, replace the oil before you run the Jeep. Gas in the oil will damage the valves.
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