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Home >> Cadillac >> 1968 >> Calais Not Available, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> ROCHESTER Carburetors >> Overhaul >> Disassembly >> Float Bowl

Float Bowl

Remove pump plunger from pump well. Remove air horn gasket from dowels on secondary side, then remove gasket from around power piston and primary metering rods. Remove pump return spring from pump well, plastic filler over float valve, and power piston and main metering rods (use needle nosed pliers to pull straight up on metering rod hanger directly over power piston). Remove power piston spring, disconnect tension spring from top of each metering rod, rotate rods and remove from hanger. Remove float assembly by pulling up slightly on retaining pin to remove pin, then slide float assembly toward front of bowl to disengage needle pull clip.

NOTE: Be careful not to distort pull clip.

Remove float needle retainer and needle assembly with wide blade screwdriver. On all car models replace needle and seat as an assembly if necessary. Remove primary metering jets.

CAUTION: Do not remove secondary metering discs.

Remove pump discharge check ball retainer and check ball, remove baffle from secondary side of bowl. On 4MV Carburetors, remove vacuum hose from tube connection on bowl and from vacuum break assembly, remove retaining screw from choke assembly and remove assembly from float bowl

NOTE: (If further disassembly of choke is necessary, remove clip from vacuum break link at vacuum break lever and remove rod, spread retaining ears on bracket next to vacuum break assembly and then remove the vacuum break assembly from the lever). Remove fast idle cam from the choke assembly. Remove lower choke rod and actuating lever from inside of float bowl well. Remove hot idle compensator cover, then remove hot idle compensator and O-ring from float bowl. Remove fuel inlet filter nut, gasket, filter, and spring. Remove throttle body-to-bowl attaching screws, remove throttle body and insulator gasket.