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Chapter 9. VAZ-21213 vehicle
modifications, alternative and
additional equipment
VAZ-21214 vehicle
The VAZ-21214 vehicle is fitted with 1.7-L engine, Central
Fuel Injection (CFI). Instead of the carburettor, a single injector is
used for injecting fuel into the central injection unit. Here fuel is
mixed with air, the resulting combustion mixture is fed to the
intake manifold and further to the engine cylinders.
The fuel injection system and catalytic converter in the
exhaust system help reduce exhaust emission and improve vehi-
cle performance.
This chapter provides a brief description of design features,
operation and diagnostics of fuel injection system, removal and
refitting procedures and methods for engine repair. Refer to
Repair Manual for Central Fuel Injection System for a more
detailed description of the system design, repair and diagnostics
with the help of specialized tools and diagnostic charts.
Engine repair - description
Engine - removal and refitting
Before removing the engine, depressurize the fuel system. To
do this, detach the fuel pump wiring plug from the injection wiring
connector, start the engine, run it for a while, then stop the engine
and operate the starter motor for 3 seconds to equalize the pres-
sure in the line.
Disconnect the battery negative lead.
Slacken the nuts holding the air cleaner to the central injec-
tion unit and to the pin in the valve cover, detach the relevant
hoses and remove the air cleaner. Detach the injector wiring;
then temporarily plug the filler neck of the central injection unit.
Disconnect the fuel supply/return hoses from the pipes on the
engine. Plug the open ends of the hoses and pipes to prevent dirt
ingress or fuel leaking.
Disconnect the throttle cable from the central injection unit
and from the bracket on the intake manifold.
On the central injection unit disconnect all vacuum hoses to
the charcoal canister and MAP sensor, detach the crankcase
vent hose. Disconnect the wiring from all injection-related units fit-
ted to the engine.
Further steps for removing the engine are in accordance with
the established procedure.
Refitting is the reverse order of removal. On completion adjust
the accelerator cable and check the operation of fuel injection sys-
tem, as recommended in Repair Manual for Central Fuel Injection.
Engine - dismantling and reassembly
Remove bracket 3 (Fig.9-1) with ignition module 4, then plug
2 with gasket and detent 1 with the sealing ring.
Disconnect and remove the supply/return pipes from the cen-
tral injection unit and from the bracket on the valve cover.
Undo the retaining pins and remove the central injection unit,
withdraw the gasket from the intake pipe surface.
Remove intake manifold 2 (Fig.9-2) with preheater 1. When
applicable, on a work bench, detach the preheater complete with
the gasket and sealing ring from the intake manifold.
Unscrew the crankshaft position sensor, mounted on the tim-
ing cover.
Further dismantling of the engine is carried out in the usual
order as outlined in section 2.
Reassembly is the reversal of dismantling. There is a dispos-
al gasket under the central injection unit, always remember to
renew it during reassembly.
Fig.9-1. Removing the original components from the front left-hand side
of the engine:
1 - detent; 2 - plug; 3 - bracket; 4 - ignition module
185
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