Gas tank cap vent

SuprHtr at SuprHtr at
Mon Jul 2 17:54:38 PDT 2007


Vacuum-operated petcocks have caused headaches like these when they go 
bad. I'd check for leaks in the vacuum hose to the petcock.  Also, 
some folks have swapped out the stock GPz petcock for a ZRX unit that 
doesn't have the vacuum actuation. And Murph sells a conversion kit to 
get rid of the vacuum fuel valve feature.

Paul in Ohio 

----- Original Message -----
From: Larry Zoia <phezanthawk at>
Date: Monday, July 2, 2007 8:23 pm
Subject: Gas tank cap vent
To: Kawasaki GPZ1100 discussion <gpzlist at>

During long periods of sustained high speeds (80-90 mph from Michigan 
to NJ this weekend) I noticed symptoms of fuel starvation which were 
ameliorated somewhat by running with the petcock in the Prime position.

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