Some time back two Primus 96 stoves turned up in our Scout group jumble sale donations. Our GSL decided they'ld do more good for the group as stoves than the couple of quid they would be sold for. I've been given them on the undestanding that if I can get them both working I can keep one.
I've put new pump leathers, burner lead seals and NRV pips in both and 'mine/the Scout's one' runs fine. 'Peter's/the Cub's' one seems to be losing pressure. There is remains of a lead washer on the mating face of the NRV.
Should there be lead seals on the NRVs?
Where might the leak be? I can't see any sign of escaping fuel.
The flashback arrestor/strainer gauze is quite blackened. Is that a problem?