Skoda Workshop Service and Repair Manuals > Octavia Mk1 > Drive unit | 1.6 ltr./74 kW Engine - Mechanical Components | Engine cylinder head, valve gear | Removing and installing cylinder head | Removing and installing upper part of collecting intake manifold

Removing and installing upper part of collecting intake manifold

Special tools and workshop equipment required

t	Torque wrench 5 to 50 Nm (e.g. -V.A.G 1331-)

t	Pliers for spring strap clips

t	2 hose clamps -MP 7-602 -

t	Cable strap

Removing

Note

All cable straps which are detached or cut open when removing, should be fitted on again in the same place when installing.

–	On models fitted with a coded radio set, pay attention to the coding; determine if necessary.

–	Disconnect the earth strap from the battery with the ignition off.

–	Remove caps for nuts and remove engine cover -arrows-.

–	Detach air guide hose at throttle valve connection and at vent housing of the crankcase ventilation -arrows-.

–	Detach vent hose -1- and unplug connector from air mass meter -2-.

–	Unscrew bolts -3- and -4- and remove air filter housing.

–	Disconnect the vacuum line from the brake servo unit.

–	Disconnect wiring/plug:

1 -	Plug for intake air temperature sender -G42-

2 -	Unplug connector for throttle valve control unit -J338-

–	Detach hose to the ACF tank.

–	Unhook throttle control cable -arrows-.

–	Unscrew earth strap at cylinder head cover.

–	Pinch off and disconnect 2 coolant hoses for throttle valve supports with hose clamps -MP 7-602- (first of all drain pressure from cooling system).

–	Disconnect plug -1- from valve for variable intake manifold changeover -N156-.

–	Release vacuum hose -2-.

–	Release left and right retaining lugs at collecting intake manifold -arrow-.

–	Release on left and right each one screw -arrow- of the rear intake manifold suspension.

–	Press off upper part of collecting intake manifold to the rear from lower part of collecting intake manifold.

Note

Seal the intake passages in the bottom part of the collecting intake manifold with plug (clean cloth).

Install

Note

Replace seals if damaged.

–	Insert upper part of collecting intake manifold onto the bottom part.

–	Allow to clip left and right retaining eyes.

–	Coat screws of rear intake manifold suspension at collar with commercially available lubricant and tighten to 10 Nm.

–	Adjusting throttle control cable → Chapter.

–	If necessary, top up with coolant → Chapter.

–	Interrogate fault memory, perform basic setting: → 1.6 ltr./74 kW engine, Simos 2 Injection and ignition system; Rep. Gr. 01; Self-diagnosis; Interrogate and erase fault memory, Basic setting of engine

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