Hi guys she was driving fine until I stopped in car park came out and she started but cut out and would not start .She seems to be trying to start like she was running out of fuel .My lpg is empty but I tried holding button while she cranked over and she fired up but cut out again . No lpg I guess . I put 5 gallon of petrol in but made no difference {just in case gauge was faulty} local garage came out with diagnostics but found no faults.when easy start sprayed into intake she fired up and cut out so I am guessing it's the pump .Any advise where to start .,😢

Ok so swapped relays made no difference.ordered new pump hopefully coming Friday fingers crossed