in my days of auto repair, i have seen collapsed tanks from the wrong cap being
used.
Bruce Damen wrote:
> my point exactly...... you really think the fuel pump has enough suction to
>collapse
> an ole truck gas tank?? im thinkin not... one thing to try is next time you
>run it
> and it stops again...or even if you run it for a while... try taking off the
>gas
> cap... if there is a big rush of air when the seal breaks i think you have
>the problem
> identified
>
> ADvent@thuntek.net wrote:
>
> > using a non vented cap on a tank intended for a vented tank will callapse
>the tank
> > and ruin it if it doesn't starve the wengine for fuel.
> >
> > Bruce Damen wrote:
> >
> > > my understanding of vapor lock is that if you have a none venting gas cap
>on a
> > > gas tank that needs a vented gas cap you basiclly cause a vacum in the
>gas tank
> > > and the fuel pump is unable to suck any more fuel..... thats my version.
> > >
> > > Bruce
> > > 1949 chev 1/2 ton
> > >
> > > The Perfesser wrote:
> > >
> > > > Hello, list...
> > > >
> > > > I have a 1949 Chevy Pickup... I'd call it "original restored" - most of
>the
> > > > underpinnings are original, but the engine is rebuilt, and it has been
> > > > painted and re-upholstered. You can see a picture online at
> > > > http://songs.com/pws/xmas99.html . I've only had it about 3 months,
> > > > basically it looks great and runs great, but three times now it has
>"conked
> > > > out" and refused to restart, and on two of those occasions I've had to
>tow
> > > > it a fair distance to get it home.
> > > >
> > > > Each time it has 'conked out" like this, I have been unable to restart
> > > > it. Starter works fine - one time it wore the battery down to zilch,
>hence
> > > > the tow-job - but there's no getting it to turn over. So I've taken
>it to
> > > > a mechanic, who didn't get to it till the next morning, and each time,
>the
> > > > mechanic had no trouble starting it - even in the "dead battery" case.
> > > >
> > > > In the first two instances, I could see that there was no fuel in the
> > > > transparent fuel filter; also, I'd been experiencing some "surge" going
>up
> > > > hills and so suspected the fuel pump. After the second instance, we
> > > > replaced the fuel pump, and it has in fact been running much more
>smoothly
> > > > ever since (not that I drive it all that much - like, twice since the
>pump
> > > > was replaced).
> > > >
> > > > This past Sunday, despite the new fuel pump, it conked out again and I
> > > > could not restart it. Called AAA. They towed me home... and as soon
>as he
> > > > lowers the truck in my driveway, I tried to start it and... fwhoomp...
>it
> > > > started right up.
> > > >
> > > > A neighbor who knows a little about old cars listened to my tale of woe
>and
> > > > suggested that my problem is caused by "vapor lock" I'm not really
>sure
> > > > what "vapor lock" is, though I've the phrase hundreds of times.
> > > >
> > > > Does this sound like "vapor lock" to any of you, or could there be
> > > > something more fundamental, like a failing magneto or something? Are
>these
> > > > engines/carburetors prone to vapor lock? And, can vapor lock be so
>total
> > > > that it would keep a truck from starting for over an hour?
> > > >
> > > > If it is "vapor lock," can anybody tell me a) how to prevent it in the
> > > > future and b) what to do about it if it happens again?
> > > >
> > > > If it's not "vapor lock," then how do I go about trouble shooting a
>problem
> > > > which only appears intermittently? (I'm fortunate that, so far, it has
> > > > only happened in cases when it has been easy to pull off the road...
>that I
> > > > might not be quite so lucky next time makes me nervous every time I
>leave
> > > > my driveway.
> > > >
> > > > I confess I know little about old trucks or carburetors. I wanted to
>take
> > > > auto mechanics in high-school but was supposed to be on a fast track to
> > > > college (lotta good THAT did me...) so, now that I need the knowledge,
>it
> > > > ain't there. I learned a lot about engines when I was a kid (anybody
> > > > remember the "Visible V-8" model?) but at this point I've forgotten more
> > > > than I never knew, and my knowledge of carburetors in particular is
> > > > non-existent. Can anybody steer me toward a good book on carb
>fundamentals?
> > > >
> > > > I am grateful for this list... there are not a lot of vintage chevy
>truck
> > > > owners in my neighborhood, so it's nice to find a fellowship of like
>minded
> > > > folks out here on the Net.
> > > >
> > > > Look forward to whatever help anybody can offer... thanks very much.
> > > >
> > > > --PS
> > > >
> > > > ***************************************
> > > > Paul Schatzkin, aka The Perfesser
> > > > General Manager, songs.com unit of Gaylord Digital
> > > > shipping - 3927 Cambridge Ave #2 Nashville TN 37205
> > > > mail: P.O. Box 121616 Nashville TN 37212
> > > > ph: 615-298-1122 - fax: 615-298-4825
> > > > e-mail: perfessr@songs.com
> > > > - - - - - - - - - - - - - - - - - - - - - - - - -
> > > > "Hard work has a future pay off. Laziness pays off now." -- (anon)
> > > >
> > > > 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
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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