Removal, installation and inspection of glow plugs (diesel) (Opel Corsa C)

1. The main elements of a glow plug are the housing and the heating element pressed into it. Due to the good starting characteristics of diesel engines with direct fuel injection, the need for preheating the combustion chambers only appears at outside air temperatures below 0°C.

Removal and installation

2. Disconnect the cable from the negative battery terminal (see Section 8), if necessary, remove the engine cover (see Chapter 2).

3. On Y17DT(L) engines, remove the air cleaner (see Chapter 4), and on the Z17DTH engine, the intake air duct and intake manifold.

4. On Y17DT(L)/Z17DTH engines, remove the engine control module (ECM) together with the bracket (see Chapter 2, Section 10).

5. Disconnect the connectors (see accompanying illustration) glow plug wiring and remove the spark plugs.



6. Installation is carried out in the reverse order. Tighten the spark plugs to the required torque (see Specifications).

Verification

7. After removal, first of all, check the spark plugs for mechanical damage - replace them if necessary.



8. The glow plug's functionality can be checked by applying 12 V to it (see accompanying illustration), - a working spark plug should glow red hot in a timely manner (be careful not to burn yourself):

• a) The power supply must be equipped with a fuse to protect against short circuits;
• b) The clamps for supplying voltage to the spark plug must have reliable insulation;
• c) After checking, let the candle cool for a few minutes to avoid burning yourself.

9. The working element of a working spark plug should glow red hot no later than 5 seconds. If it takes significantly longer to heat up the spark plug, or the tip glows only in the middle, the spark plug must be replaced.

Information taken from the website OpelBook.ru

10. For a more thorough check of spark plugs, special equipment is used, which is available at almost any service station.