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Filed Under (Toyota) by admin on 15-06-2010
CARBURETOR (COROLLA) REMOVAL 1) Drain cooling system. Disconnect air intake hose. Disconnect emission control hoses from air cleaner. Remove air cleaner mounting bolt and wing nut. Remove air cleaner. 2) Disconnect accelerator cable. Disconnect throttle cable (A/T). Disconnect carburetor wiring connector. Disconnect emission control hoses and tag for installation. Disconnect fuel inlet hose. Remove 4 carburetor mounting nuts and No. 1 vacuum pipe. Remove carburetor. DISASSEMBLY Air Horn 1) Remove air cleaner setting bolt. Remove fuel pipe clamp, union, fuel pipe and gaskets. Remove vacuum hoses. Remove pump and pivot screw and pump arm with connecting link. Disconnect choke link and choke opener link. 2 Remove 8 air horn screws and number plate, fuel pipe support and wire clamps. Remove air horn from carburetor body. Disconnect wiring from solenoid valves. 3) Remove float pivot pin, float and needle valve assembly. Remove air horn gasket, needle valve seat and gasket, power piston retainer, power piston and spring. Remove pump plunger and boot. See Fig. 2.
Filed Under (Honda) by admin on 19-06-2010
AIR INDUCTION SYSTEM CARBURETED Air Intake System The air intake system used on carbureted vehicles supplies fresh, filtered, temperature-controlled air to the carburetor. System consists of an air cleaner, air intake pipe, carburetor, intake manifold and intake air control system. The intake air control system maintains a uniform air temperature inside the air cleaner. Carburetor receives fresh air, controlled within a narrow temperature range, regardless of outside temperature. Carburetor Carburetor is a 2-barrel downdraft fixed venturi type. Carburetor consists of 3 layers, a choke valve and air horn make up the top layer; the venturi, float chamber, accelerator pump, actuator, and choke housing make up the middle layer; and the primary and secondary throttle valves, secondary diaphragm, and pilot screw are part of the throttle body, or bottom layer of the carburetor. FUEL INJECTION
Filed Under (Toyota) by admin on 30-04-2010
INSPECTION: 1. Clean disassembled parts before inspection. a. Clean parts with carburetor solvent. Soaking is the preferred method.
b. Do not soak rubber or vinyl parts. c. Clean all carbon from around throttle valve. d. Blow dirt and other foreign matter from all jets and carburetor passages. 2. Inspect float and needle valve assembly. a.
Check pivot pin (1) for scratches and excessive wear. b. Inspect float (2) for broken tangs and worn pivot pin holes.
c. Inspect the spring (3) for breaks and deformation. d. Check the needle valve (4) and plunger (5) for wear or damage. e. Inspect the strainer (6) for rust and breaks. 3. Inspect suction chamber and piston.
Filed Under (Toyota) by admin on 30-04-2010
EGR Vacuum Modulator Bracket Suction Chamber Suction Piston Throttle Positioner
? Non-reusable part Throttle Solenoid Actuator Carburetor – Exploded View
Filed Under (Pontiac) by admin on 06-10-2010
CONDITION & POSSIBLE CAUSE CORRECTION Hard Starting Binding carburetor linkage Eliminate binding Binding choke linkage Eliminate binding Binding choke piston Eliminate binding Restricted choke vacuum Check vacuum lines for blockage Worn or dirty needle valve and seat Clean carburetor, see ENGINE PERFORMANCE Float sticking Readjust or replace float see the ENGINE PERFORMANCE section Incorrect choke adjustment Reset choke adjustment see ENGINE PERFORMANCE Defective coil Replace coil Improper spark plug gap Regap spark plugs Incorrect ignition timing Reset ignition timing see ENGINE PERFORMANCE Detonation Over-advanced ignition timing Reset ignition timing see ENGINE PERFORMANCE Defective spark plugs Replace spark plugs Fuel lines clogged Clean fuel lines EGR system malfunction Check and repair EGR system PCV system malfunction Repair PCV system Vacuum leaks Check and repair vacuum system Loose fan belts Tighten or replace fan belts, see ENGINE PERFORMANCE Restricted airflow Remove restriction Vacuum advance malfunction Check distributor operation Dieseling Binding carburetor linkage Eliminate binding Binding throttle linkage Eliminate blinding Binding choke linkage or fast idle cam Eliminate binding Defective idle solenoid Replace idle solenoid see ENGINE PERFORMANCE Improper base idle speed Reset idle speed, see see ENGINE PERFORMANCE Incorrect ignition timing Reset ignition timing see ENGINE PERFORMANCE Incorrect idle mixture setting Reset idle mixture, see ENGINE PERFORMANCE Faulty Acceleration Incorrect ignition timing Reset ignition timing see ENGINE PERFORMANCE Engine cold and choke too lean Adjust choke and allow engine to warm-up Defective spark plugs Replace spark plugs Defective coil Replace coil