Skoda Workshop Service and Repair Manuals > Octavia Mk1 > Power unit | 1,6/74; 75 kW MPI engine | Engine cylinder head, valve gear | Removing and installing the cylinder head | Removing and installing the top part of intake manifold - engines with identification characters AEH, AKL

Removing and installing the top part of intake manifold - engines with identification characters AEH, AKL

Special tools and workshop equipment required

t	Pliers for spring strap clamps

t	Hose clamp -MP7-602 (3094)- (2 pieces)

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 engine covers → Chapter.

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

–	Detach vent hose -1- and unplug connector for 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 the earth strap at the cylinder head cover.

–	Pinch off and disconnect 2 coolant hoses for throttle valve supports with hose clamps -MP7-602- (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 intake manifold -arrow-.

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

–	Press off the top part of the intake manifold towards the rear from the bottom part of the intake manifold.

Note

Seal intake passages in the bottom part of the intake manifold with plugs (with a clean cloth).

Install

Note

Replace seals if damaged.

–	Push the top part of the 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 → Vehicle diagnostic tester.

Skoda Workshop Service and Repair Manuals