Hoo boy, this was fun. A 1947 Coleman 530 I bought for $1 about 12 years ago and have never looked at in all that time. I do not know how long it had been sitting before that, but as the tank was bone dry and odour free, I suspect a good long while. My folks v kindly shipped it over to the UK from Canada, and after a quick squirt of WD40 the pump leather started to work, but she wouldn't hold any pressure.Tthe O-ring around the filler plug had perished and petrified, so I chipped it out with a screwdriver and fitted a replacement.
Filled her with paraffin (as close to Coleman fuel as I've found here - I know purists are going to get upset it seems to be working, see next vid - plus it goes like a bomb in my Tilley lamp) and WHOOSH. There was a leak where the vaporiser threads into the tank so I was losing pressure, which accounts for some of what happened next, and improperly vapourised paraffin kept shooting up in odd bursts (probably the generator was a bit dry or a bit dirty from years of disuse), hence the big orange flames, but see video 2: dismantling and cleaning made it run 100 times better, still needs a bit of attention...
cheers - she's working a treat these days (running it on proper coleman fuel) but my mates aren't sure it wasn't funnier when it was just belching fire...
wpl955g 4 months ago