Removing injection nozzles
5-cylinder engine: remove the upper part of the exhaust manifold.
For everyone: unscrew the fasteners of the injection nozzles.
Using pliers, pull out the nozzle together with the nozzle.
The fuel line remains connected to prevent dirt from entering the injector.
When installing, it is necessary to moisten the rubber o-rings of the injector, as well as the liners, with gasoline in order to achieve easy installation on the sealing surface.
If the nozzle is put on «dry», there is a danger that the rubber ring will flatten and not seal properly. This will result in malfunctions in the engine behavior due to the ingress of unaccounted for air, for example, in uneven idling.
Damaged or cracked O-rings must always be replaced.
Tighten injector mounting bolts to 10 Nm.
Removing the air intake sleeve
The thick sleeve between the fuel mixture adjuster and the throttle body must be removed, at least partially, during various repairs to the injection system:
Loosen the clamps on the air mixture adjuster and throttle body.
Loosen the clamps of the remaining air duct hoses on the air intake sleeve. Of these, we can name: a hose to the control valve for stabilizing the engine shaft speed in idle mode, to the air channel of the injection nozzles, etc.
Removing the air intake sleeve
Remove air ducts.
Remove the air intake sleeve.
When installing, insert the grid over the corrector of the composition of the combustible mixture with the convexity up. Pay attention to mark «oben» (top).
Removing the upper part of the intake manifold
Remove the air intake sleeve.
Disconnect drive cable «gas» and remove it from the counterholder.
Disconnect throttle angle sensor plug.
Remove air ducts.
Loosen the inner flange bolts.
Remove exhaust manifold.
Be sure to use new flange seals when installing.
Tighten the flange mounting bolts in two steps to a final value of 20 Nm.
Left: In a 4-cylinder engine, injection temperature sensor (1) and temperature sensor (2) coolant and warning light are located at the top of the hose fitting on the cylinder head.
Right: in a 5-cylinder engine, injection temperature sensor (2) located at the bottom of the hose fitting, electronic temperature sensor (1) more about this in the chapter «Devices and tools») bolted to the top of the coolant pipe fitting.
Right: In the 5-cylinder engine, gas thrust is also installed. Designation: 1 and 2 - mounting brackets; 3 - gas thrust; 4 - counter support of the guide mount; 5 - gas thrust shell.
Left: gas cable (3) 4-cylinder engine reinforced with two mounting brackets (1 and 2) on the throttle lever eccentric. Gas cable shown with guide mount (4).
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