Re: petrol disappears!

#1

Quote:

Subject: petrol disappears!
From: "Tim" timmackey (AT) hotmail (DOT) com
Date: 14/07/03 06:38 GMT Daylight Time
Message-id: <betflj$hkg$1 (AT) sparta (DOT) btinternet.com

After my pinto /weber carb'd Hawke has been standing for a few days, it
takes an age to start up due to petrol having presumably drained back into
the lines / tank.

I know this is a reasonably common prob, but have not found an easy,
relatively cheap solution. I have one of those plastic in-line filters near
the carb, and it appears almost or completely empty after a week or so. All
fuel lines are new, filter is new, no leaks anywhere, so is it draining
back, or evaporating? I have considered a couple of ideas, such as a one way
(non-return) valve just in front of the filter, also even considered an
electric pump rather than mechanical. All that ctranking for ages is doin my
battery in, and sounds naff anyway!! Any ideas folks?

It shouldn't make a scrap of difference if the fuel lines are empty as long as
the float bowl isn't. If that's emptying then you need to find out why.

Quote:

PS if ohm's law states I=V/R, how come a 12v battery can supply more than
12 amps when shorted?? 12/0 (assuming no internal resistance)=12.

Your maths teacher must be distraught at having wasted his best efforts over
the years. 12/1 =12. 12/0 = infinity.

Dave Baker - Puma Race Engines (www.pumaracing.co.uk)
You find somebody to love in this world you'd better hang on tooth and nail -
the wolf is always at the door. (Don Henley - In A New York Minute)

#2

In article <betflj$hkg$1 (AT) sparta (DOT) btinternet.com>, timmackey (AT) hotmail (DOT) com
says...
<dunno about the fuel bit>

Quote:

PS if ohm's law states I=V/R, how come a 12v battery can supply more than
12 amps when shorted?? 12/0 (assuming no internal resistance)=12.

12/0 = infinity! 12 / 0.01 = 1200 Amps, 12 / 0.1 = 120 Amps...

Then P=VI, so 12v and 120 Amps = 1440W = probably molten cable (if power
dissipated in that cable)

#3

Quote:

PS if ohm's law states I=V/R, how come a 12v battery can supply more
than
12 amps when shorted?? 12/0 (assuming no internal resistance)=12.

Any number devided by 0 is infinity. 12/1=12.

--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

#4

12 volts and all that....
Oops, yes of course I got my maths wrong ! Obvious when I look at it now.TY
for all replies, sarcastic and otherwise! Think I will try Richard's idea of
an electric pump, but wondered about its location - IE should it be the carb
side of the existing mechanical pump, or the tank side? Or...how about
in-tandem as it were, using a "Y" connector at both ends of the pump
inlet/outlets, this way surely the mechanical pump would not be affected at
all by the leccy one?? TY again...Tim.
"Tim" <timmackey (AT) hotmail (DOT) com> wrote

Quote:

After my pinto /weber carb'd Hawke has been standing for a few days, it
takes an age to start up due to petrol having presumably drained back into
the lines / tank.

I know this is a reasonably common prob, but have not found an easy,
relatively cheap solution. I have one of those plastic in-line filters
near
the carb, and it appears almost or completely empty after a week or so.
All
fuel lines are new, filter is new, no leaks anywhere, so is it draining
back, or evaporating? I have considered a couple of ideas, such as a one
way
(non-return) valve just in front of the filter, also even considered an
electric pump rather than mechanical. All that ctranking for ages is doin
my
battery in, and sounds naff anyway!! Any ideas folks?

PS if ohm's law states I=V/R, how come a 12v battery can supply more than
12 amps when shorted?? 12/0 (assuming no internal resistance)=12.

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Re: petrol disappears!

Cars Maintenance General car maintenance (uk.rec.cars.maintenance)

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