Skoda Workshop Service and Repair Manuals

Removing and installing injection valves   Note t  Safety precautions when working on the fuel supply system → Chapter. t  Rules of cleanliness when working on the fuel supply system → Chapter. t  Observe the safety instructions before starting fitting work → Chapter.   Note The Teflon gasket ring on the injection valve must be replaced each time after removing the injection valve → Chapter. Special tools and workshop equipment required t  Set of tools -T10133- Removing For the vehicles Fabia II, Roomster

–  Release screws -1- and remove retaining clip. –  Disconnect plug -2- at charge pressure sender -G31- with intake air temperature sender 2 -G299-. –  Release the catches in -direction of arrow- and detach the pressure pipe -3- first of all from the throttle valve control unit -J338 - and then from the exhaust gas turbocharger. For the vehicles Octavia II, Yeti –  Release screws -1- and remove retaining clip.

–  Disconnect plug -2- at charge pressure sender -G31- with intake air temperature sender 2 -G299 -. –  Release the catches in -direction of arrow- and detach the pressure pipe -3- first of all from the throttle valve control unit -J338 - and then from the exhaust gas turbocharger. Continued for all vehicles –  Remove the high pressure pump → Chapter.

–  Release the fixing screws -arrows- and carefully remove the fuel distributor from the injection valves.

–  Press the O-ring upwards by hand as shown and remove it from the injection valve. –  Screw the striking hammer -T10133/3- with the extractor -T10133/15-.

–  Then insert the extractor -T10133/15- into the groove -arrow- on the injection valve.

–  Pull out the injection valve with careful knocks. Install

–  Thoroughly clean the holes of the injection valves in the cylinder head with the nylon brush -T10133/4-. –  Check the supporting washer made of plastic for damage, replace if necessary → Chapter.

–  Replace the spring element -arrow- as well as the Teflon gasket ring each time after removing the injection valves → Chapter. –  Replace O-rings between injection valve and bottom part of the intake manifold and moisten lightly with clean engine oil.   Note t  The Teflon gasket ring of the injection valve must neither be oiled nor greased. t  The injection valve must insert easily, if necessary wait until the gasket ring has been drawn together sufficiently.

–  Press the injection valve -1- by hand up to the stop into the hole of the cylinder head. The injection valve should be pressed evenly into the countersink -2- on the cylinder head.   Note t  The injection valve must never rest against the countersink edge on the cylinder head -arrow A-, but it must always be pressed evenly into the countersink -2- on the cylinder head. t  After installing, carry out a visual inspection of the fitting location of the injection valve. Further installation occurs in a similar way in reverse order to removal.