Where is the fuel pump located in the old Buick GL8?

[VanAlaina]

The fuel pump in the old Buick GL8 is located under the oil pan. Here is some information about the fuel pump: 1. Injection type: The injection pump is mainly used in automotive diesel engines. The injection pump assembly is usually composed of the injection pump, governor and other components installed together as a whole. 2. Self-priming type: Before starting, fill the pump casing with water. After starting, the impeller rotates at high speed, causing the water in the impeller channel to flow towards the volute. At this time, a vacuum is formed at the inlet, opening the inlet check valve, allowing air from the intake pipe to enter the pump and reach the outer edge through the impeller channel. Then, it merges with the water flowing from the right return hole and flows along the volute.

[McAnderson]

Veteran GL8 owners know all too well the hassle of locating the fuel pump. Unlike some cars where it's in the engine bay, this one's tucked under the chassis. First, you'll need a pit or lift to raise the car. From underneath, you'll spot the fuel pump mounted inside the fuel tank, specifically at the tank's top. The tank sits beneath the rear seats—trace forward from the rear axle to find it. Removal is a real chore: disconnect fuel lines and wiring, loosen the tank straps, then lower the entire tank. Be extra careful not to damage surrounding lines, as older parts are often badly rusted. Last time I replaced mine, it took a full half-day—DIYers should brace for specialty tools and patience.

[FelixFitz]

The fuel pump in the older GL8 models is located on top of the in-tank fuel pump assembly inside the fuel tank, making repairs quite troublesome. You'll need to lift the vehicle first and locate the metal fuel tank underneath the chassis, approximately right below the second-row seats. The fuel pump's access cover is on the upper surface of the tank, secured by a metal retaining ring. During disassembly, you must first disconnect all wiring harnesses and fuel lines connected to the pump before carefully removing the tank. Here's a crucial detail: The vent tube on the tank is particularly prone to aging and cracking, so handle it with extreme care. Last time, my friend's car had a fuel leak from this exact spot, causing quite a headache. For those attempting DIY repairs, I recommend preparing sealant and replacement fuel lines in advance, as removing the tank is extremely time-consuming.

[OAriana]

The fuel pump in the old GL8 is hidden inside the fuel tank, which is located near the middle of the chassis. To see its exact position, you must use a lift to raise the vehicle. Underneath the second-row seats, the circular cover with wiring harnesses and pipelines on top of the fuel tank marks the fuel pump's location. For repairs, the entire fuel tank must be removed because the fuel pump module is embedded within it. This design turns fuel pump replacement into a major task, with labor costs almost matching the price of the part itself. If the fuel pump malfunctions—manifested as engine hesitation during acceleration or difficulty starting—it's likely a fuel pump issue, and you should be prepared for significant expenses.