Other sources of heat that are overlooked are the fuel pump and the fuel pressure regulater. Much of the fuel pushed to the motor is returned to the tank by the regulater but the process adds heat to the fuel besides it is also running past that hot motor so it is in effect cooling the mixture unit too by carrying heat away from it to the tank. If hot fuel is a real problem then the ultimate fix is going to be a heat exchanger on the fuel return line to keep the heat of the motor from getting into the tank. David Teitelbaum vin 10757 --- In dmcnews@xxxx, "therealdmcvegas" <DMCVegas@xxxx> wrote: > --- In dmcnews@xxxx, "Walter Coe" <Whalt@xxxx> wrote: > <SNIP> > > The best cure, obviously, is to keep the fuel cool. The easiest > place to > > start is reducing the heat transfer from the coolant pipes. As > you may > > already know, aluminum is an excellent conductor of heat. And > there isn't > > much room for insulation between the pipes & the fuel tank. I > suggested >