E300 turbodiesel glow plug replacement

[david-griffiths@st-brelad]

I know that there can be problems in replacing these. I presume that you remove the inlet manifold first to get to the plugs. I also understand that there can be problems with no. 6 snapping off in the head when trying to remove it. Can anyone give me advice please? I am a reasonably competent DIYer and have a wide range of tools. Is there any sense in soaking the plugs in diesel/similar for 24 hours to ease their removal? I intend to replace them all and have bought Denso as a good brand.