SEAT Workshop Service and Repair Manuals

Removing and installing glow plugs Check the tool and equipment equivalence table according to the applicability between Seat / VW / Audi / Skoda → Chapter

Special tools and workshop equipment required

t	Flexible-head spanner SW 10 -3220-

t	Torque wrench -V.A.G 1331-

t	Handheld multimeter -V.A.G 1526 C- or handheld multimeter -V.A.G 1526 A-

t	Auxiliary cable kit -V.A.G 1594 C-

Test prerequisites l  Engine cold l  Ignition off Operation process »Carry out the following work sequence« –  Remove engine cover panel → Chapter.

–  Unplug electrical connection -6- from the fuel pressure sender -G247-.   Note Items -1, 2, 3, 4, 5, 7, 8, 9- can be disregarded.

–  Unscrew fuel return line bolts -arrows-.

–  Open wiring duct brackets -arrows- and release the wiring harness.   Caution t  Pull the connectors carefully from the glow plugs. t  If the connector is damaged when pulling it off, the complete wiring harness including connectors must be replaced (an individual connector cannot be replaced).

–  Position pliers -3314- with groove -arrow A- on support sleeve shoulder -arrow B-.

–  Carefully pull connectors off glow pin plugs -in direction of arrow-. –  Clean glow pin plug openings in cylinder head. It must be ensured that no dirt falls into the cylinder. Cleaning procedure: 1.  Use a vacuum cleaner to remove coarse dirt. 2.  Spray brake cleaner or suitable cleaning agent into glow plug opening, let it work in briefly and blow out with compressed air. 3.  Then use an oil-soaked cloth to clean the glow pin plug opening. –  To loosen the glow plugs, use the jointed spanner E/C 10 -3220-. Installation is carried out in the reverse sequence; note the following: –  Before installing, bore in cylinder head and threads must be completely cleaned of all deposits.   Note Do not oil or grease thread of cylinder head bore or of ceramic glow plugs. –  Screw ceramic glow plugs into cylinder head by hand using U/J extension and socket -3220-. –  Then tighten ceramic glow plugs. Tightening torque: 15 Nm   WARNING t  Carry out resistance test on cold engine after installing and before starting engine for first time. Carry test out on all ceramic glow plugs. t  If defective ceramic glow plug is broken, remove all fragments from engine, otherwise these can cause damage to engine. t  Specification: max. 1 Ω –  If the specification is exceeded, renew the defective ceramic glow plug.