Hi guys

My old man has a EL Falcon Wagon I6 had a new gas system installed about a year ago.

The system is set to always start on fuel.

Everything was brandnew tanks and all.

When on gas the Car feels like its running on 3-5 cylinders it very rough and has no power at all.

Also when slowing down he has to down shift like a manual other wise it will stall if it gets to idle while its moving.

The gas feed goes into the intake piping i was wondering if maybe once the gas goes through the intake system each cylinder is not geting an even amount of gas so running rough.

The car runs perfect on fuel,

Any help would be great thanks

has this just started doing this? Was it running ok on gas before? Does it run fine on petrol?
If so, it sounds like it needs a tune/service on the gas system.
There is a post somewhere that tells you how to do a basic service on your gas system, but personally i think it is easier and more eefective to give to the gas mans to do.

it was runs fine on fuel.

it was ok for about 1 week after it was installed we have been taking the car back the test something and give it back saying its fine but then it packs up about 2days later

take it back and get it fixed