LPG gas problem vz v6

[arsh8919]

Hi guys
Ive got commodore vz 2005
I got problen with lpg. Few days ago i changed the all spark plugs because car was missing when I accelerate hut changing spark plug fixed that problem but after week it has new problem when i stop car somewhere it looks like someone push my car and car and I checked it when it is on LPG It make noise in engine as well and exhaust sounds like backfiring and some giving it a little acceleration when I switch to petrol it fine as normal

Please give me some advice
Thanks

 

[Benboy]

Take the car to an accredited LPG Vehicle Installer to have it checked. LPG is highly volatile and if your system is faulty or has components that may be leaking or likely to leak then your vehicle could have a sudden and sad ending + anyone unfortunate enough to be in it at the time - if they cannot escape quickly. Good luck.