Glow Plugs — removal and installation (Peugeot Eurovans 806)

Checking glow plugs for conductivity is only possible after they have been removed. To check, you need a tester with a diode incandescent lamp. It is recommended to have glow plugs checked by a workshop. Glow plugs are designed to preheat combustion chambers and support the fuel ignition process.

A defective glow plug means that when starting a cold engine, the fuel mixture in the cylinder chambers with working spark plugs ignites immediately, while in the cylinder with a faulty spark plug, ignition occurs with a delay. A jerky engine and blue exhaust gases are a strong indication of a faulty spark plug.

In order to gain access to the glow plugs, some work must be done.

Due to high temperatures, spark plugs may burn out. Spark plug failure may be caused by defective injectors, incorrect fuel injection adjustment of the high-pressure fuel pump, or too low fuel injection pressure.

To remove the spark plugs you will need a socket and an extension with a ratchet. To remove the spark plug, unscrew the nut that secures the wire, and then unscrew the spark plug itself.

Installation of spark plugs is carried out in reverse order. The spark plugs are tightened to a torque of 20 Nm, and the nuts with the wire to a torque of 4 Nm.

(Source of the article is website peugeotbook.ru)