Hi Allen,
I have to agree with Gordon there, on crushing the tank. I "HAVE" run into
serious trouble with vacuum on under 20 degree days. Due to the shrinkage
of the fuel from the overnight cold, The vacuum would become so great that
the truck would starve for fuel and stall after running the bowl dry.. I'd
loosen the gas cap, (Whoosh!) then she'd fire up and run like a top.
Kevin P.
-----Original Message-----
From: owner-oletrucks@autox.team.net
[mailto:owner-oletrucks@autox.team.net]On Behalf Of Tibbers
Sent: Thursday, February 24, 2000 9:20 PM
To: Allen Coblentz; oletrucks@autox.team.net
Subject: RE: [oletrucks] non-vented gas cap/tank
Allen,
I have not done any analysis which would support my opinion, but I gotta
tell ya, it would be hard for me to imagine an oletruck fuel pump (and
connecting hoses, etc.) that would pull vacuum on a fuel tank to cause
failure. If the material were thin, (it ain't) I could imagine at MOST some
"oil canning" but certainly nothing enough to crush a tank. It would take
serious vacuum to make that happen, and I suspect that something else in the
system would fail before that tank. That does NOT however say that you
should not get a vented cap. You should. I just don't think your tank is
in any immediate danger until you get it switched out.
Gordon
-----Original Message-----
From: owner-oletrucks@autox.team.net
[mailto:owner-oletrucks@autox.team.net]On Behalf Of Allen Coblentz
Sent: Thursday, February 24, 2000 5:08 PM
To: oletrucks@autox.team.net
Subject: [oletrucks] non-vented gas cap/tank
I asked this question a couple days ago during the discussion on vapor
lock.....no answers so far. It was said that a non-vented gas cap could
cause a vacuum capable of crushing the gas tank. My original cap is
non-vented........should this be replaced with a vented style? ( I
haven't experienced any problems driving my truck as a daily driver.)
What year did Chevy go to the vented fuel system......and why?
Thanks again, Allen
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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