Replacement:
Glow Plugs Do Eventually Wear Out!
The life span of glow plugs will vary depending on frequency of use and climatic conditions. Regular
cold starting will cause glow plugs to age faster. Generally,by the time the unsatisfactory operation of
the glow plug is noticed, it is too late. At the first unexpected frost the diesel starts
really badly, knocks loud and produces great clouds of smoke. Below -10 °C, it may
not start at all. High time indeed to replace the glow plugs; preferably the whole set.Economy tip: Replace glow plugs as sets!
Experience shows that glow plugs reach their maximum wear levels in quick succession, and if connection lines and power rails are already removed it would be more economical to replace the complete set, rather than have to replace other plugs individually a short time later.Important when replacing:
Check type designation!
If the incorrect glow plugs are fitted, the consequences can be severe for the engine operation and the glow plugs themselves.Therefore: Ensure that the replacement glow plugs are the correct type. The BorgWarner Application Guide provides details on which glow plugs or environmentally friendly retrofit sets are suitable for which vehicles. Details are also provided of which third party glow plugs can be replaced by BorgWarner plugs. Every BorgWarner glow plug is marked with a 10-digit BorgWarner-number and a voltage value. These can be clearly seen on the plug body.
Plug bodies with 10-digit number
Two important rules when replacing glow plugs:
1. Only install glow plugs in OE quality, as supplied by BorgWarner.
2. If the manufacturer specifies post-heating glow plugs, only use glow plugs with the designation "GN".Ensure correct torque settings of glow plugs and power connection nuts!
When replacing glow plugs, three points in particular are to be observed:
1. Under no circumstances must contamination around plug hole fall into combustion chamber.
2. Glow plugs must be tightened to the correct torque.
3. Power connection nuts must be tightened to the correct torque.Installing glow plug with torque wrench:
Ensure to observe vehicle manufacturer’s specifications. Caution - observe maximum torque settings: M8 threads: 7 ft/lbs., M10 threads: 9-11 ft/lbs., M12 threads: 15-16 ft/lbs.Installing glow plug when torque wrench not available:
Screw glow plug into engine block until finger tight. Then turn down by approx. 30° with a suitable tool.
Our tip: To carry out the task safely and accurately we recommend the use of a torque wrench.Tighten glow plug approx. 30"
Tightening power connection nut:
The maximum torque setting for the power connection nuts must not exceed the following values: M4
threads max. 2 ft/lbs., M5 threads max. 2 ft/lbs. If glow plugs have plug connections, check these for corrosion.
