How to start a Prins system on lpg as oppose to petrol
 

I am having a little difficulty with starting and I suspect it is only when I am starting on petrol, not on lpg. Is there a way to start on lpg with my Prins system first thing in the morning before the car warms up purely so I can see if my starting difficulty is related to petrol starting only?

BRC not Prins!
 

Duh, my system is BRC not Prins!

For emergency LPG start up you turn ignition on and then hold the gas button down for 5 seconds until the changeover light starts flashing orange the then crank it. You can do this 5 times until the ECU needs re-setting