Removing
Attention! If the preheating system has just been running or the engine has just been turned off, the glow plugs will be very hot.
1. Disconnect the negative battery terminal.
2. Remove the air intake pipe system and disconnect the crankcase ventilation hose from the oil filler neck.
3. Loosen the fixing nut (arrow) busbar to the glow plug. Please note that the supply wire is connected to the current bus on the glow plug of cylinder No. 2.
4. If necessary, move any pipes and wires to the side to improve access to the glow plug being removed.
5. Unscrew the glow plug and remove it from the cylinder block.
Examination
1. Check each glow plug for mechanical damage. The reason that the tips of the glow plugs are burnt or destroyed may be a bad jet of fuel atomization by the injector. If there is such damage, the fuel injectors must be checked and, if necessary, replaced.
2. If the glow plugs are not mechanically damaged, check their electrical resistance, which should be less than 1 ohm.
3. Glow plugs can be tested by applying 12 volts to them. At the same time, they must be heated evenly and for the required time interval.
4. In doing so, the following precautions must be observed:
- hold the glow plug with a special clip or pliers;
- the electrical supply circuit of the glow plug must have a fuse;
- after checking, the glow plug should cool down for a few minutes.
5. A glow plug in good condition heats up to a reddish working tip within 5 seconds. With longer heating or heating in the middle part, and not at the end of the candle, the candle is faulty and must be replaced.
Installation
1. Installation is made in sequence, return to removal.
2. In this case, the threaded part of the candle must be lubricated with a copper-based non-stick composition.