Petcock Failure

John Soliday johnsoliday at
Tue Aug 14 18:24:55 PDT 2007

One thing that will make an O-ring fail is non-use.  I've found at least on
my older bikes that people that just left it in the on position, a lot of
times it would rip when finally turned.  That's why I usually turn my to
"off" if I own a bike that has an off position, or bikes that don't have
off, but only prime, I like to always run them to reserve to I get to
exercise the O-ring i.e. not let it stick to either side it is pressed
between.  Just my theory of petcock failures over the years.  BUT my biggest
mystery is WHO named it a petcock in the first place, ....jeez.


-----Original Message-----
From: dominatr37 [mailto:dominatr37 at] 
Sent: Tuesday, August 14, 2007 5:38 PM
To: Simon White; GPzList at
Subject: Re: Petcock Failure

<<Just to chime in here (and yes, I'm still lurking, even if I don't
contribute as I used to) - I still have the original petcock and seals on
mine, and have never had an issue with it. There may have been a dodgy batch
of o-rings go through, but mine is one of the older/more travelled ones on
the list, and has no problems at all.

FYI - I've done ~125k km, and my bikes' build date is Dec 1994.


Mine is all original too, and I'm about to break 50,000 miles . Never a
problem, thank God.

Ralph L. Angelo Jr.
Author of "Help! they're all out to get me!
The motorcyclists guide to surviving the everyday world."
ISBN# 1-4137-6187-9 

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