| [GMCnet] gas tank capacity mystery [message #102768] |
Wed, 13 October 2010 02:42  |
greg
Messages: 17
Registered: May 2004
Karma:
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Junior Member |
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Well, after the hair-raising adventure of getting stuck outa gas while
backing down the incline last weekend,
i finally had a chance to take the coach out on the highway today.
This comes after last week's gas tank drop, leak-fix and re-mount.
the leak was only a pin-hole at one of the vent lines and everything
else looked great.
when we were done, we put in 4 or 5 gallons to start with.
After i got stuck on the hill, we put in 12 more gallons. let's say
16 total.
then i drove 19 city miles and went to fill it all the way up
so i could take notes and track the MPG.
I was shocked to see the coach take on an additional 44.6 gallons!
If the supposed capacity is 50 gallons total, then something doesnt
add up here.
16 gallons minus 19 city miles (4 gallons?) = approx 12 gallons.
so how in the world did it swallow 44.6 more gallons at the pump?
that'd be 56.6 gallon capacity tanks. Is this possible on any of the
models?
Mine is a '78 Eleganza II, and yes, the tanks look a little bulging at
the bottom.
i checked to see if anything was leaking, and nope... Everything's
tight.
(Well, OK, there's some gas smell when i come to a sharp stop,
and we were gonna check the canisters next, but i can't imagine any
significant loss here...)
So is this simply a bulging tank phenomena, and i have an unintended
"upgrade" to 57 gallon tanks?
whew! that'd be the first upgrade i didn't pay for!
Any insights appreciated..... Thanks all!
Greg
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