85Santana3 said:

I have suffered from overheating fuel pump ever since I bought this truck and in fact I even installed a back up electrical fuel pump to switch between the two. Despite these every summer dealing with heat was a pain in the neck. Finally after a day of having to switch back and forth 5 times I came up with an idea which has worked so far. Idiotic as it may seem it might help others who have the same problem. So I share it:
First I changed the place of hose where fuel is sent to carburator. I tried to pass it through a cooler area insted of going right on top of engine which would be very hot. Then I found galvanized metal ducts (actually low teck chimney for fire place or oven) with two corresponding 90 degree elbows and put them together in manner shown in photos bellow. It is installed in a way that colder air from the bottom of the truck (when it moves) is pushed up to the fuel pump which has a sock full of wet sand sitting on top of it. A plastic water container with a robber hose is supplying water to the sand in the sock when I press its sides. This is done before I start a journey or if it is too hot once or twice during the day.
Finally I placed a bit of aluminum foil between the engine and fuel pump (till I find better insulation material).
It looks ridicuouls but since I have added this I had no vapour locking problem.
I welcome any suggestion for imporving my hillbilly solution (what is the equivalent of hillbilly in uk?)
regards

Click to expand...

Colthebrummie said:

I would try removing that fuel filter from near the pump and relocate it near to the carb.

Click to expand...

steve2286w said:

keeping to true HR style maybe wrap the tank in a couple of those cheapie supermarket freezer shopping bags

Click to expand...

tottot said:

The standard petrol pipe fixing goes from the lift pump forward to the front of the engine passing through a pipe holder by the thermostat housing then back to the carb.

Click to expand...

85Santana3 said:

Col I have 2 filters the other one is before carb as you suggestd.


I think the vapour lock happens in the pump and in the hose between pump and carburator. I am going to test wrapping those in fiberglass insulation and see what differnce it makes. I am not sure what "the
cheapie supermarket freezer shopping bags" are. Here supermarkets are forcing everybody to use fabric bags (you have to buy them of course if you want to see unicorns roaming in your backyard).
At any rate I can't belive people used these Landies in Africa in that heat.


That's an idea maybe if I move the hose entirely problem will be solved.

Click to expand...

Colthebrummie said:

Having just one filter near the carb and more or less horizontal reduced the pressure needed to keep the carb supplied.

Click to expand...