Club 80-90 Forums

some time back i had a problem with the bus stalling and not wanting to take on any load. i had loads of responses to solutions and again thanks.
a few days back the same thing again, only not any where near home, but near a mates parents place and he just happened to be home. got a tow there and again checked for vacuum leaks, idle solinoid,etc, and sprayed carb cleaner down her throat. a little while later it was fine.
came home and told my tale to a neighbour who was a farmer from zimbabwe who said they always had the same problem with VW's of all sorts because of the heat.
an old boy told him that because the engine gets so hot in a tight space the mechanical fuel pump gets a kind of vapour lock that limits the fuel.
the solution is to take a cold wet rag and cover the pump, which cools the metal , which cools the fuel. keep the cover off as long as you can to disapate the heat too.
after 5 min. or so you should be good to go...until the next time.
thinking back iwas in a slow moving lane for some time, so althoug the temp gauge did not rise, when i took the engine cover off it was very hot under there
just wondering, if this is new to anyone, or old news?

Interesting solution, I can see the logic.
The thing is, cool fuel is constantly running through the fuel line and pump. if it is all correct then the amount running through should not vapourise as it isn't there long enough to "boil"
if fuel can boil or vapourise in the lines, then there are issues with the fuel delivery system and or the routing of the lines in my opinion

Found a link about VW's and vapor lock. It's about older air cooled engines, but the threoy should be simialr to water cooled too.
Food for thought is all, and any thing that helps find a solution or eliminates one is always a good thing when sitting on the side of the road

http://www.vw-resource.com/vapor_lock.html" onclick="window.open(this.href);return false;