I've been playing with the settings on my vaporiser (including the
'response' screw on the front) - bin swapping engines so i had to!

Its currently running and idling but likes to try to stall when you
suddenly let off the throttle (like when you change gear)

Does this mean i have the screw on the front of the vaporiser too far
out or too far in? Is the diaphram now too loose or too tight?
I have an air fuel gauge in the car and the fueling is pretty much
spot on all the time, just wondering which way i should try to turn it
next.

On Oct 5, 9:34 am, Tom Woods wrote:
I've been playing with the settings on my vaporiser (including the
'response' screw on the front) - bin swapping engines so i had to!

Its currently running and idling but likes to try to stall when you
suddenly let off the throttle (like when you change gear)

Does this mean i have the screw on the front of the vaporiser too far
out or too far in? Is the diaphram now too loose or too tight?
I have an air fuel gauge in the car and the fueling is pretty much
spot on all the time, just wondering which way i should try to turn it
next.

If the fuel mixture is always perfect, i'd think that the diaphragm
tension is fine. If the vapouriser has an idle bleed screw you could
bring that out a little, so the fuel is never really "cut". Check out
this description, it works perfectly for me
http://someusefuljunk.atspace.com/TuneLPG/Tune_LPG.html

Good luck!
Josh