G'day all, just lately in this hot weather i have been having trouble with my fuel system. If i get down to half a tank or so i lose line pressure. The fuel in the tank gets very hot and could be vapourising. If i go and fill up then i dont have any probs and if it is a cool day i have no probs. The car has been on the road for 2 1/2 years and 30,000 miles and have not had this problem before this year. I have 2 pumps, one feeding the surge tank then the inj pump. Return line to surge tank then to main tank via filler tube. Am toying with putting a cooler on the return line but since i had no probs in the last couple of summers i could be wasting my time. Rail pressure when running is always at 40 psi. Anyone got any other ideas besides putting it on LPG