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How to Check the Fuel Lines and Fuel Pump on a Pontiac Bonneville

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Two things make an internal combustion engine function: fuel and fire. If the engine in a Bonneville isn’t working the way it should, then it’s because there’s a restriction on one or the other. If it’s fuel, then the two most common problems are a clogged fuel filter and a malfunctioning fuel pump. Check the filter for clogs, and then check the pump and fuel lines.

Tools Used: Tools, Floor jack, Jack stands, Replacement parts, Clean bucket, Adjustable wrench

Check the Fuel Lines and Fuel Pump

Lift the rear end of the Bonneville with a floor jack, and support the carby the frame with jack stands. Slide under the back of the car, and locate the fuel tank. It’s centered under the car, below the backseat. Find the fuel lines, which run along the bottom of the car from the tank to the engine compartment.