- Disconnect the negative battery cable.
- Remove the air cleaner assembly.
- Disconnect the accelerator cable. If equipped, disconnect the cruise control
cable.
- Disengage all wire connections, vacuum sensing tubes and fuel hoses.
- Unfasten and remove the carburetor. Cover the opening to keep dirt out of
the intake manifold.
- Installation is the reverse of removal. Be sure to use a new carburetor
gasket. Adjust the throttle linkage as previously described.
The RX-7 is equipped with a 4-barrel carburetor which is similar in design
to the carburetors used on piston engines. Two primary barrels feed a constant
mixture of air and fuel to the rotors. The primary barrels are supplemented
by two vacuum operated secondary barrels during acceleration and high speed
driving.
- Disconnect the negative battery cable.
- Remove the air cleaner assembly.
- Label and unfasten all electrical connections from the carburetor and necessary
surrounding components.
- Label and disconnect all necessary vacuum hoses.
- Disconnect the oil metering pump linkage at the carburetor.
- Disconnect the hot start assist cable, along with the choke and accelerator
cables, from the carburetor. Route the cables off to the side and out of the
way.
- Disconnect the air vent hose. On all except California vehicles, disconnect
the sub-zero start assist fluid hose.
- Disconnect the fuel return and the main fuel hoses. Plug the main fuel line
to prevent leakage.
- Disconnect the metering oil pump lines from the carburetor. Disconnect the
air vent solenoid valve coupler.
- Remove the carburetor attaching nuts and remove the carburetor. Cover the
intake manifold with masking tape to prevent dirt and debris from entering
the engine. Discard the old gasket; a new one should be used during assembly
to assure proper vacuum seal.
To install:
- Place the new gasket onto the intake manifold, then install the carburetor
over the mounting studs and onto the gasket.
- Install and tighten the attaching nuts.
- Complete the remainder of the installation in reverse of the removal procedure.
Adjust the throttle linkage as previously described.
- Connect the negative battery cable.
