Trouble removing glow plugs from a Zafira

I am having difficulty starting my Zafira when cold so I thought I would check my glow plugs.

Unfortunately they are extremely tight! Garage friend has suggested having a go at them and if it goes wrong they will have to be machined out. Has anyone got anymore ideas to help, tried plusgas etc still no joy! If one does break what are the options?

Asked on 14 February 2012 by adiec1

Answered by Honest John
If one breaks the head will have to come off and the plug will have to be machined out at huge expense. So first ask yourself if the job is really necessary. The fault might not be the glowplugs.
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