I have a Voyager 4500 Marine Gas Cooker, which was on the boat when I bought it several months ago. Suddenly the larger hob burner has stopped working properly, only producing a tiny flame and not staying on. This happened from one day to the next and was similar to when I've run out of gas, but I haven't. Everything else is running fine.
It's clean, and none of the holes are blocked, it's not damp, I haven't spilled anything on it. The flame is blue, not yellow so I don't think it's a leak. There's no smell of gas. It's been like this for a couple of weeks now.
I haven't been able to take off the ring as the screw is worn, so the previous owner has obviously had a problem with it at some point. It'd been working fine for me until now, though I've always had to keep the knob for this ring pushed in for a several seconds or it goes out again.
I have unbolted the whole stove top and everything seems to be connected as far as I could tell.
Does anyone know what could be the cause? And what I could do? Are there replacement gas rings for these?
Thanks