Ceramic Glow Plugs
Special tools and workshop equipment required
- SW 10 hex ball socket 3220
- Torque wrench V.A.G 1331
- Hand multimeter V.A.G 1526 C or Multimeter V.A.G 1526 A
- Connector test set V.A.G 1594 C
Test Conditions
- Engine is cold
- Ignition is switched off
Removing
- The ceramic glow plugs are very sensitive to impacts and bending. Visual Characteristics of Ceramic Glow Plugs .
- For this reason, do not use sheathed element glow plugs which have dropped (even from a height of approximately 2 cm) under any circumstances, even if no visible damage can be detected.
- Installation instructions must be performed in sequence, otherwise there is a danger the plug breaks and will cause damage to the engine.
When removing and installing, do not bend the ceramic glow plugs. Remove components which hinder installation.
-- Remove engine cover.
One Piece Engine Cover
Pull the one piece front engine cover -arrows A- upward with a quick jerk and then pull the lower mount -arrow B- forward.
Two Piece Engine Cover
On the two piece engine cover, first pull the outer cover upward with a quick jerk -arrows in the upper illustration-, then pull the inner engine cover upward with a quick jerk -arrows in lower illustration-.
-- Disconnect glow plug connectors from glow plugs.
-- Remove ceramic sheathed element glow plugs using flex wrench 3220.
Installing
Installation is performed in reverse order. When doing this note the following:
-- Cylinder head bore and thread must be completely cleaned of deposits before installing.
Never oil or grease thread of bore in cylinder head and ceramic sheathed element glow plugs.
-- Screw ceramic sheathed element glow plugs into cylinder head by hand using flex wrench 3220.
-- Install the glow plugs with the hinged socket 3220 and tighten them to 15 Nm.
- After installing and before first engine start with a cold engine, always perform a resistance test at all ceramic sheathed element glow plugs.
- If the malfunctioning ceramic sheathed element glow plug is broken, remove all broken pieces from engine, otherwise they can cause damage to engine.
- Specified value: max. 1 Ω
-- If specified value is exceeded, replace malfunctioning ceramic sheathed element glow plug.