Om646 evo glow plug replacement

[Diamondw204]

Hi guys,
Any tips on glow plug replacement,other than don't snap them off .
I would do a lol but if that happens no one is laughing.
Will lube well,use torque wrench on removal and refit.
Do I need to ream the glowplug holes and if so any ideas where to get a tool to fit the om646 evo engine?.
Hope you can help
Steve

 

[kam05]

I'd also be interested in knowing this too as I have faulty glowplug on a om646 evo engine

 

[KennyN]

Deleted , wrong engine.

Senior moment

 

[horatio]

They came out really easy on my E220 with the same engine. I sprayed them with no nonsense stuff from screwfix over the course of a few days, got the engine hot and took them out with a torque wrench (20nm IIRC)

 

[Diamondw204]

Hi Horacio
Did you ream the glow plug aperture before fitting the plugs?
Also did you use any ceramic grease?

 

[horatio]

I didn't bother, the threads weren't coked up. I just put a very thin smear of copper grease.

The evo engine uses ceramic plugs which were pretty expensive.

 

[Diamondw204]

Yeah did notice they are between 32 and 60 pounds,which sort did you use?
Did want to ream but as I run be ultimate fuel all the time think the head will be reasonably clean.
Better get the bits ordered
Thanks for your help

 

[horatio]

I got a set of NGK's on eBay for under £100 IIRC...