Just as a test, you could take some insulation (like house insulation)
and wrap it around the fuel line where you think it is exposed to higher
heat. Use some alumninum foil wrapped around the insulation to secure
it....dont compress the insulation too much. That will be a quick experiment
to see if it is heat in a particular spot


another thought...is there a particularly long run of rubber hose in
the system? Rubber hoses should not be longer than perhaps a couple
of feet (British feet is OK). Long runs should be metallic line, never copper.


mike in tucson