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How to Install a Buick Park Avenue Oil Pump

The Park Avenue is a full-size sedan that was manufactured by the Buick division of General Motors from 1990 to 2005. The Park Avenue has a 6-cylinder 3.8-liter engine with sequential fuel injection. The oil pump of a late-model Buick Park Avenue is mounted to the engine under the front cover. The installation of the oil pump in this vehicle requires you to remove additional components to access the oil pump.

Instructions

1

Place a wooden plank on a floor jack as a cushion and support the engine with the floor jack. Disconnect the cable from the batterys negative terminal with a socket wrench to prevent the engine from starting accidentally.

2

Rotate the tensioner counterclockwise to remove the drive belts. Disconnect the tensioner assembly from the engine with a socket wrench. Remove the pulley and bracket for the drive belt idler.

3

Remove the axis mount bracket with a socket wrench if this is necessary to access the front cover for the engine. Remove the front cover and disconnect the mounting bolts for the oil filter adapter. Disconnect the oil filter adapter assembly, including the spring and pressure regulator valve. Discard the gasket for the oil filter.

4

Disconnect the mounting screws for the cover of the oil pump with a socket wrench. Remove the inner and outer gears from the oil pump housing.

5

Coat the gears for the oil pump with petroleum jelly and insert them into the oil pump housing. Pack the remaining space in the housing with petroleum jelly.

6

Fasten the oil pump cover and tighten its mounting screws to 97 inch-pounds with a torque wrench. Install the oil filter adapter assembly with a new gasket and tighten its mounting bolts to 11 foot-pounds. Attach the front engine cover and the tensioner assembly with a socket wrench. Connect the pulley and bracket for the drive belt idler if you removed it earlier. Attach the drive belts and the torque axis mount bracket.

7

Connect the negative battery cable with a socket wrench. Lower the floor jack supporting the engine. Fill the engine oil to the proper level if necessary and start the engine. Check and fix any oil leaks.