Love This

[Fran and Bud]

For what it is worth, no one seems to have mentioned (or else I missed the
post) that many "in the tank" fuel pumps rely on the gasoline in the tank to
cool the pump and need at least 1/4 tank of gas to do this properly.

If I had a vapor problem, I would at least eliminate this as a possibility
by topping off my tank every time that it went below 1/2 and see if the
problem went away.  Particularly if the problem seems to be aggravated by a
near empty tank as one post mentioned.

Even a pump external to the tank, can be affected by other heat sources ,
lack of adequate air flow, etc. but would most likely not be affected by the
low fuel level.


----------
>From: Clarence Wood <clarencewood at centuryinter.net>
>To: diy_efi at efi332.eng.ohio-state.edu
>Subject: Re: Love This
>Date: Fri, Jan 29, 1999, 11:17 PM
>

>Thanks Greg!  I think you have put your finger on a problem that I have 
>been having.  Please elaborate on the float vent; on what junk cars can I 
>remove one and where do I look for it on the car?
>
>At 02:01 PM 1/29/99 -0700, Greg wrote:
>(snip)
>>But
>>if you are doing variable pumping alone, for $#% sakes, use a float vent on
>>the rails, so as to get the #$#% bubbles back to the tank!!!
>>
>>Regards, Greg
>>
>>
>>>Bruce Plecan wrote:
>>>>
>>>> -----Original Message-----
>>>> From: James Weiler <james at brc.ubc.ca>
>>>> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>>>> Date: Friday, January 29, 1999 1:07 AM
>>>> Subject: RE: Love This
>>>>
>>>> For me it's not the plumbing that is the "news".  It's being able to
>>>> manipulate
>>>> fuel line pressure without needing a mechanical device.  As things sit now
>>>> for TPI the fuel pressure is referenced to engine vac/boost.  With this
>>>> device
>>>> a closed loop electrically controlled Fuel pressure trimmer is possible,
>>>> meaning
>>>> big injectors, lower pressure at idle, to help get reasonable pulse widths.
>>>> Bruce
>>>>
>>>> >Sorry to get in this late but so what?  I mean whats the advantage of >a
>>>> one line EFI vs. 2 fuel line set-up?  Besides less plumbing.
>>>> >thanks
>>>> >jw
>>>> >
>>
>>
>>