Domstone86

Thank you for all the responses! I probably wasn't very clear on a few things. The part that has sheared off has sheared off inside the middle of the bolt, like Tony had said, which I have taken off the pump in an attempt to replace it. I ended up getting the thread out, inspiration from the screw extractor idea. It turns out that the nut was only loosely screwed in the middle and a 0.5mm drill bit was enough to both drill a small hole which budged it, and in reverse took it out. I then just replaced the 2mm bleed screw with one from a similar part and hey presto, it's all sorted! Shame I think I'm going to have to bleed the high pressure pipe to bleed this time, and it doesn't look like it's been taken off in many years, rusty welfare! I'll try some acetone and ATF mix on it for a while and see what other options there are to crack them free.

Hey all. I don't normally start my first post on forums asking for help, but I'm at the point where I realise there's not many options left, so maybe somebody can point me in the right direction. With nothing obviously available online, it seems some more serious digging around may need to be done, and this is something I'm quite new to! Since buying my new boat, there's been the odd issue with certain parts of the engine setup. One of these required a bleed of the system. As the union nuts for the high pressure injector pipes are fused on solid, the next highest bleed location was the not recommended idle damper screw, but my only other option without some difficult work ahead of me. I barely touched it with the spanner and the top of the hex nut just fell off. I spent hours searching for it, thinking it was an entire screw I was looking for, only to be informed it was snapped (confirmed by finding it outside of the bilge a week later!!) I believe I have 2 options. The first is to find a complete replacement for the idle damper screw bits, for which I can find hardly any reference to online, let alone a working part. My second option would maybe to drill out the existing snapped bit, and replace with a similarly sized nut. Both options sound daunting to me, but I believe they are maybe realistic options. I've included a picture of the damper (without the top bit as I found it when I was doing the vacuuming lol), and the fuel injection pump. (DPA3246857) Oh yes, to avoid confusion, the thread size in the injector pump is 8mm. I'm aware there are different sizes as we have got the wrong one for a replacement from the engine in the workshop! I feel a bit stupid for all this, but it's typical of my handwork, I'm more of an electricity man than a greasy man! so thank you in advance!