SEAT Workshop Service and Repair Manuals

Glow plugs: Removing and installing t  Glow plugs: Removing → Anchor t  Glow plugs: Installing → Anchor. Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter. Special tools and workshop equipment required

t  10 mm articulated wrench -3220-, see equivalent → Anchor

t  Base -3314-, see equivalent → Anchor   Caution t  The ceramic glow plugs are very delicate due to the special properties of its materials and must be handled with special care when mounting as well as dismounting them. t  Only use certified ceramic preheating glow plugs → Spares catalogue. t  Transport and store only with the proper original boxing or with padded plastic individual wrapping. t  Do not unpack the ceramic plugs until the moment you will use them. t  The ceramic preheating glow plugs are sensitive to bumps and torsion. For this do not use glow plugs that have fallen, even from an altitude of some 2 cm, even if no damage is detected (like fine cracks). t  Replace the ceramic preheating glow plugs when you doubt its condition. t  Broken or damaged ceramic glow plugs can cause damage to the engine. t  If the plug breaks remove from the fuel chamber all the fragments before switching the ignition on, otherwise, the engine will fail due to piston seizing. t  The compression test should be selected in the „Guided fault finding“ with the function „Diagnostic susceptible systems“ → Vehicle diagnostic, testing and information system VAS 5051. t  The ceramic preheating glow plugs should not be dismounted for the compression test.

Removing . –  Switch ignition OFF. –  Remove the engine cover upwards -arrows-.   Caution t  Ensure that no line connection is damaged when disconnecting the glow plug connectors, as the entire wiring harness otherwise has to be renewed. t  Do not compress the pliers -3314- to firmly to remove the glow plug connector, otherwise the support sleeve may be damaged.

–  Open retaining clips -arrows- on wiring harness and pull electrical connectors off glow plugs.

–  Position pliers -3314- with groove -arrow A- on support sleeve shoulder -arrow B- and pull glow plug connectors off glow plugs.   Note Separate all necessary electric connections so that damage cannot be caused to the wiring harness. –  Clean glow plug openings in cylinder head; make sure no dirt gets into cylinder.   Note t  Cleaning procedure: t  Use a vacuum cleaner to remove coarse dirt. t  Spray brake cleaner or suitable cleaning agent into glow pin plug opening, let it work in briefly, and blow out with compressed air. t  Then clean glow plug opening using a cloth moistened with oil.

–  To loosen the glow plugs, use the jointed spanner E/C 10 -3220-. Fitting . Installation is carried out in reverse order, noting the following: –  To tighten the glow plugs, use the jointed spanner E/C 10 -3220- with a suitable torque wrench. l  Tightening torque: 18 Nm

–  Reattach glow plug connectors -1- to glow plugs -arrow-.   Note Make sure that glow plug connectors are firmly seated. –  Clear fault memory of engine control unit.