Advice needed after replacing fuel pump

[the executive]

ok guys sorry for starting a new thread but i had a search and cant find anything with the same prob....
Basically this morning i decided to change my fuel pump as it died months ago(running LPG)..
after removing old pump which was completely fried it has charcoal to prove it..and doing my best to clean out tank, lines and replacing filter..both GAS and FUEL are running rough as guts and abit smokey..spent the day trying to work it out changing plugs, resetting computer i just cant work it out.........any idea's anyone else had this sort of problem?

[Burnout124]

check your car is not duel fueling (both lpg and fuel being added at the same time ) pull the fuel pump fuse and see if your car runs on lpg

[the executive]

thanks mate, thats 1 problem fixed, any idea why it would start duel fueling? have only had problem since i replaced fuel pump...

[Burnout124]

your injectors may need a service (they could be leaking and siezed) or your gas system wont shut the injectors of . my bet is on the injectors if they are not used for a while they gum up .