SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4 cylinder injection engine (1.6 l engine, roller rocker arms) | Mixture preparation system, electronic inj.,Gas | Injection system: Repairing | Intake manifold lower part, engine codes BSE, BSF, CCSA, CMXA: Removing and installing

Intake manifold lower part, engine codes BSE, BSF, CCSA, CMXA: Removing and installing

Note

t	Installing and removing intake manifold upper section and intake manifold lower section together.

t	Observe safety precautions → Chapter.

t	Observe rules for cleanliness → Chapter.

t	Removing → Anchor

t	Fitting → Anchor.

Removing

–	Detach engine cover -arrows- (according to version).

–	Unplug connector -1-.

–	Pull hoses -2- and -3- off secondary air pump.

Note

To release the tubes press hose connections together.

–	Remove the dipstick together with the dipstick funnel and the bracket for the secondary air pump.

–	Unscrew secondary air pump -4- off bracket.

–	Unscrew the bolts on the bracket for the secondary intake manifold -arrows-.

–	Unscrew the bolts on the fuel rail and remove the expansion rivets from the fuel rail cable guide -arrows-.

–	Unscrew the remaining bolts -arrows- from the lower part of the intake manifold to the cylinder head.

–	Next, open carefully the tabs on the upper element of the intake manifold (by pulling on the tabs to one side -arrows-) and remove the lower element by pulling forwards. During this operation, release the fuel distribution with the injectors from the lower element of the intake manifold.

–	Take fuel rail and injectors off intake manifold lower part as a pair -arrows- and lie on a clean cloth in the engine compartment.

Note

Cover the intake conduits on the cylinder head with a clean cloth.

Fitting .

Installation is carried out in the reverse order of removal while noting the following:

Note

Secure all hose connections with the correct hose clips (same as original equipment) → Parts catalogue

–	Renew seals between intake manifold and cylinder head.

–	Renew the O-rings between injector and intake manifold and lubricate with clean engine oil.

–	Position fuel rail together with injectors (properly secured) against intake manifold and press into place evenly all round.

–	When doing this observe that seals fit correctly between the lower and upper parts of the intake manifold.

Tightening torques:

Qty.	Nm
Intake manifold to cylinder head	25
Connecting bolts for upper and lower section of intake manifold	3
Fuel rail on intake manifold	8

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