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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 4317
Experience:  Mercedes Benz Qualified Diagnostic Technician
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Best way to deal with stuck glow plugs in 2006 V6 3 Ltre diesel

Customer Question

Best way to deal with stuck glow plugs in 2006 V6 3 Ltre diesel engine
Submitted: 4 years ago.
Category: Mercedes
Expert:  MB Paul replied 4 years ago.


before attempting to undo the glow plugs always ensure the engine is brought upto operating temperature - in 99% of cases the glowplugs will come out when the engine is nice & hot.

If not then soak with some good quality penetrating fluid & leave overnight. Then once again bring upto operating temperature before trying to undo again.

At this point you do not have much alternative than to just go for it & try to undo the plug - if it does break then it will need to be drilled out.

Mercedes have a special tool kit for drilling & removing broken glow plugs due to seizure in situ - so it may be worth taking the car to a Mercedes dealer or specialist with access to this kit before you get to this point!

Best regards, Paul