Hmm. Something odd here.
Even if the vapouriser is drawing vapour out of the tank rather than liquid, I would expect it to muster a bit of pressure.
Can you start it, switch it over to LPG then swap each injector back to petrol, and see what happens to the vapour pressure?
BTW: the brass item sounds like a filter. Might be worth checking it's not clogged before going too much further.
Absolutely no chance of starting anything at the moment Kev.
Due to the tank been 2/3 full, i've been undoing a few things at the back end to relieve some of the pressure
All i'll say is thank god everybody is at work and there is a nice strong wind blowing
.
One it has cleared so I can start it again, i'll have a play but to be honest, i'm wondering if that brass filter which bolts onto the KME Gold reducer is bunged up or collapsed
Still doesn't explain why it behaved before / after a fast drive and top up (as in the first few posts)