Hi first post. Au2 dedicated lpg stopped. Undid drain plugs connerter full of radiator fluid. Turned gas tank valve off ran car to empty line. Put a kit in converter(not easy) Went well for one day then stopped. Tested the three solenoids on/off. Idle and prime all 12 ohm resistance and they all worked when pulled out and key start. Looked on this site luke111 thank you for info on stepper motor. Undid mine pushed plunger half way in and disconnected lead engine started. Put lead on did not start so put another stepper motor in and all good. Rad fluid may have e stuffed the step motor. Lessons i have learnt drain sludge converter two 10mm bolts when hot to let liquid wax out every say 10 k. Clean bottom solenoid if not starting cold. Think best to use propane from supergas rather than normal propane/ butane mix in snow and use antifreeze in snow otherwise converter freeze and crack. BUtane no vapour below zero propane good to neg 30c approx.
Bope this helps lime luke111 helped me
Thanks grant
Also think converter leaked in side where 4 bolts join two halves together ie were loose and corroded.