nedforceone wrote:Did you warm the engine up first? I'm just concerned about snapping one in the head, I already have a snapped glow plug, I have seen the control valve and tips on ebay and going off what wojciech said about fixing them on his kitchen table if worst comes to worst that's what I'll do N
They are a fair bit thicker than glow plugs so it would take a fair bit of force to snap one. I don't think I warmed the engine up first but it was a while ago I did them so I may have done. They all came out fairly easily once I put enough pressure on the bar. I wouldn't think the threads are likely to cease up as they are protected from water by the top rubber seal and are only really exposed to engine oil unless one of the copper washers is f***.
I've heard that sometimes it can be a struggle to pull them out once undone as when there is a lot of carbon build up on the nozzle the nozzle won't come back through the hole in the cylinder. Mine all pulled out easily though so fingers crossed yours will too