hey all i have an impco convertor that goes to a mixer ring i get gas to the convertor and when i press the bleed button on the back i get gas at the ring but it coughs and evan flames out the back what have i got wrong

what you've got wrong is an impco converter with a mixer ring.

obviously a back yard job, how about you get a licensed fitter to install a proper setup

na to much just for a rock crawling rig i want it to run almost upsidedown and ive done everything myself and its going to stay that way

Well it's your disaster, not ours - just make sure you don't put anyone else at risk too.
LPG + ignorance = epic fail.

its my truck i drive it off the road on a controlled track

WHICH MEANS I WILL BE DRIVING IT NOT YOU
so what is the problem?

The problem is you obviously don't know what you're doing and you have created a potentially dangerous situation.
If you got something as basic as this wrong what els have you stuffed up. These things don't make a small bang, you are putting other people at risk.

hey i just asked a question

yep you did, and I just told how it is.

yes and not what i wanted to know

deal with it

So - one shot at helpfulness before I get like the others.

Impco converters are "simple", and run with a "Complex" Carp (Impco 200, 225, 425 etc). Take note here.

Almost all others are "Complex" converters, with a "Simple" mixer (the ring)

and youve put a Simple mixer, with a simple converter. It cant and wont work... safely. So what everyone has said already is right.

Neither device in your scenario can competently look after the LPG Flow.

For gods sake, if your building a rock crawler at least know what your doing before you do it. A mistake like yours with LPG can go very very very bad. At the least, its very expensive to repair an engine that has had a backfire under the rocker covers.

Theres enough people out there who know what theyre doing that get it wrong half the time.

Your response here (its not important so stop telling me im a knob) is getting reactions that are very similar to "Im a P Plater, and I have fullly sicccccck super low springs and a cig locker and I know whats the best way"

Sit back. You gave the information. You got a response. You could have asked for an explanation but youve come back and taken the people who do know what theyre doing on.

At this point, its up to you.

But let me say - If you ever, ever asked me to get into your truck right now (Thats right, your driving) I would decline on the basis of my safety.

Nigel

thanks for that nigel. i was told it would work so i gave it a go.
and with that i will rectify my situation thanks again for explaning