Chapter 1 Routine maintenance and servicing

Fuel system – carburettor engines 4A•1122.2 Throttle kicker control solenoidA Multi-plug B Vacuum pipes C Securing screw23.7 Four Torx head screws (arrowed) secure the carburettor tothe inlet manifold (Weber TLDM carburettor)7 Detach the vacuum hose between thethrottle kicker and the inlet manifold at source(but not the vacuum supply to the ignitionmodule). Connect a new length of vacuumhose directly between the manifold and thekicker unit.8 Restart the engine and check the enginespeed. The throttle kicker should increase theengine speed above its normal idle. Check thespeed registered against the specified throttlekicker operating speed.9 If required, the throttle kicker speed can beadjusted by prising free the tamperproof plugand the adjustment screw turned asnecessary (see illustration 21.3).10 When the adjustment is complete, stopthe engine, fit a new tamperproof plug,disconnect the temporary vacuum hose(between the manifold and the kicker unit) andreconnect the original hose (between thecarburettor and the kicker unit).11 Remove the bridging wire, and reconnectthe cooling fan thermostatic switch multiplug.Refit and secure the air cleaner, anddisconnect the tachometer and CO meter tocomplete.22 Throttle kicker control solenoid(Weber TLDM carburettor) -2removal and refittingRemoval1 Disconnect the battery negative (earth) lead(refer to Chapter 5A, Section 1).2 Disconnect the multi-plug from the solenoid(see illustration).3 Remove both vacuum pipes, havinglabelled them for correct subsequent refitting.4 Remove the screw securing the solenoidand mounting bracket assembly to thebulkhead panel, then withdraw the assemblyfrom the vehicle.Refitting5 Refitting is a reversal of the removalprocedure, ensuring that the locating lugsnaps into position and that the vacuum pipesare connected to their correct terminals.23 Carburettor (Weber TLDM) -removal and refitting4Note: Refer to the warning note in Section 1before proceeding. New gaskets will berequired on refitting, and a tachometer and anexhaust gas analyser will be required oncompletion.Removal1 Disconnect the battery negative (earth) lead(refer to Chapter 5A, Section 1).2 Remove the air cleaner as described inSection 2.3 Disconnect the accelerator cable from thecarburettor (Section 3).4 Disconnect the choke cable from thecarburettor (Section 6).5 Disconnect the fuel hose from thecarburettor, and plug its end to prevent fuelspillage and the ingress of dirt. If a crimpedtype hose clip is fitted, cut it free, but takecare not to damage the hose. Crimped clipsmust be discarded and replaced with screwtype clips during refitting.6 Disconnect the wiring from the antidieselingsolenoid.7 Unscrew and remove the four carburettorto-manifoldretaining Torx head screws, thencarefully lift the carburettor from the manifold(see illustration).Refitting8 Clean the carburettor and manifold gasketmating faces.9 Refit in the reverse order of removal. Fit anew gasket, and tighten the retaining screwssecurely. Ensure that the fuel supply hoseconnection to the carburettor issecurely fitted, using a new screw typeretaining clip.10 Reconnect the accelerator cable, andadjust it as described in Section 3.11 Reconnect the choke cable, and adjust itas described in Section 6.12 Refer to Section 2 and refit the air cleaner.13 When the battery is reconnected, startand warm up the engine then check the idlespeed and mixture settings as described inChapter 1.24 Carburettor (Weber TLDM) -dismantling, cleaning,inspection and reassembly4Note: Refer to the warning note in Section 1before proceeding. Check parts availabilitybefore dismantling. If possible, obtainan overhaul kit containing all the relevantgaskets, seals, etc, required for reassemblyprior to dismantling the carburettor.Dismantling1 With the carburettor removed from thevehicle, prepare a clean, flat work surfaceprior to commencing dismantling. Thefollowing procedures may be used for partialor complete dismantling, as required.2 Clean the exterior of the carburettor, thenundo the two retaining screws and lift theupper carburettor body from the lower section(see illustration overleaf).3 Remove the float and needle valve from thecarburettor upper body, as described inSection 20.4 Unscrew and remove the anti-dieselingsolenoid from the upper body, but ensure that4A1595Ford Fiesta Remake