<VV> VAPOR LOCK

N2VZD at aol.com N2VZD at aol.com
Mon Apr 8 18:51:52 EDT 2013


I have never knowingly had a vapor lock issue on Corvairs (back here in the 
 cool east) ,but a lot of larger boats have a return line from the fuel 
pump to  the tank to help with this problem. It goes back from a pressure 
regulator ,  like the Spyder fuel filter with return line to the tank.
Some years back , I had a good size Onan genset on a boat that quit when  
warm. Dealer warranty  Fix was adding a return line and regulator and a  
different load resistor to the field. It had a temp gauge on the dash that never 
 showed overheat , but if quiet enough , you could hear the gas "boiling" 
in the  carb bowl after it quit.
So I imagine this could be happening under the right heat conditions in our 
 Corvairs. Maybe add a fuel return line using a spyder fuel filter or 
similar  setup would be a fix?
I can see it now , a large blower and hoses aimed at the carbs.....to  
compensate for global warming.
Regards, Tim Colson
Group red


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