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1972 Honda CB350 - Gas tank

 
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SaulDH

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Since: Dec 11, 2003
Posts: 2



(Msg. 1) Posted: Tue Apr 27, 2004 9:40 am
Post subject: 1972 Honda CB350 - Gas tank
Archived from groups: rec>motorcycles>tech (more info?)

For some reason my bike must be refilled on half a tank of gas. It is
unable to use the lower half. I don't understand because the petcock
is all the way on the bottom of the tank. If it were clogged then I
would assume that it wouldn't get any gas even with a full tank. The
hose that connects both sides of the tank together is working
properly, and both sides of the tank are being used equally. Does
anyone have any idea whets wrong?

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Bill Smith1

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Since: May 07, 2004
Posts: 62



(Msg. 2) Posted: Tue Apr 27, 2004 12:46 pm
Post subject: Re: 1972 Honda CB350 - Gas tank [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On 27 Apr 2004 08:40:01 -0700, sauldh DeleteThis @yahoo.com (SaulDH) wrote:

 >For some reason my bike must be refilled on half a tank of gas. It is
 >unable to use the lower half. I don't understand because the petcock
 >is all the way on the bottom of the tank. If it were clogged then I
 >would assume that it wouldn't get any gas even with a full tank. The
 >hose that connects both sides of the tank together is working
 >properly, and both sides of the tank are being used equally. Does
 >anyone have any idea whets wrong?

There are two inlets to your petcock, one higher up in the tank and
one at the bottom for the reserve. What's most likely is the inlet to
the reserve portion of your petcock is plugged with debris from the
tank. Rust is a possibility and other stuff that just builds up over
the years. Drain your tank and take the petcock out and clean it. Make
sure both circuits are clean. IIRC that petcock can be easily
disassembled for just this purpose.

Bill Smith<!-- ~MESSAGE_AFTER~ -->

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stone bird

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Since: Apr 25, 2004
Posts: 7



(Msg. 3) Posted: Wed Apr 28, 2004 2:06 am
Post subject: Re: 1972 Honda CB350 - Gas tank [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

"SaulDH" <sauldh DeleteThis @yahoo.com> wrote in message
news:7cc663fc.0404270740.2d77e8d6@posting.google.com...
 > For some reason my bike must be refilled on half a tank of gas. It is
 > unable to use the lower half. I don't understand because the petcock
 > is all the way on the bottom of the tank. If it were clogged then I
 > would assume that it wouldn't get any gas even with a full tank. The
 > hose that connects both sides of the tank together is working
 > properly, and both sides of the tank are being used equally. Does
 > anyone have any idea whets wrong?

Well I see no one is answering yoo, so I'll try to help.

Do yoo live on the northern hemisphere or the southern?

If yoo live on the northern hemisphere, yoo may have what is called
recurrent bubble. And only occurs when there is not enough fluid pressure in
the tank to fill the carbs (like half a tank)
If yoo live in the southern hemisphere, the reverse could be true that too
much pressure on the carbs floats keeps gas from leaving the tank.

But then I'm not a Honda expert.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: 1972 Honda CB350 - Gas tank 
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Bill Smith1

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Since: May 07, 2004
Posts: 62



(Msg. 4) Posted: Wed Apr 28, 2004 9:16 am
Post subject: Re: 1972 Honda CB350 - Gas tank [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Wed, 28 Apr 2004 01:06:57 GMT, "stone bird"
<rivercamp RemoveThis @shiawassee.net> wrote:

 >
 >"SaulDH" <sauldh RemoveThis @yahoo.com> wrote in message
 >news:7cc663fc.0404270740.2d77e8d6@posting.google.com...
  >> For some reason my bike must be refilled on half a tank of gas. It is
  >> unable to use the lower half. I don't understand because the petcock
  >> is all the way on the bottom of the tank. If it were clogged then I
  >> would assume that it wouldn't get any gas even with a full tank. The
  >> hose that connects both sides of the tank together is working
  >> properly, and both sides of the tank are being used equally. Does
  >> anyone have any idea whets wrong?
 >
 >Well I see no one is answering yoo, so I'll try to help.
 >
 >Do yoo live on the northern hemisphere or the southern?
 >
 >If yoo live on the northern hemisphere, yoo may have what is called
 >recurrent bubble. And only occurs when there is not enough fluid pressure in
 >the tank to fill the carbs (like half a tank)
 >If yoo live in the southern hemisphere, the reverse could be true that too
 >much pressure on the carbs floats keeps gas from leaving the tank.
 >
 >But then I'm not a Honda expert.
 >
 >
LOL!

Yer a BIG help. What would we do without good samaritans like you. Got
any interesting political theories?

Bill Smith<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: 1972 Honda CB350 - Gas tank 
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