Petcock question

David Fallon davidinwa at
Sat Apr 19 09:02:46 PDT 2008

Hi all;

My KZ fuel petcock seems to have a one way valve built into the vacuum 
side of the metal plate.  I have it disassembled, and when I pull a 
vacuum through the metal tube that the engine vacuum connects too, it 
flows great.  When I try to blow through that same tube, it is no flow. 
  I see this is why the fuel never shuts off.  Is there supposed to be a 
small restriction to help even out the flow?


David Fallon

More information about the GPZList mailing list