OK more info came to me re. Bugsy's gas gauge from the
P.O. He writes
"You might be right about the sending unit, that tank
is from (I think) a 74
But my 72 does the same thing as yours and I know it
has the orginal tank"
OK the MOSS Book shows a different sending unit for a
'68 - '71 Spridget and then a completely different
unit for a '72+ Midget.
I'm making the assumption now that since gauge reads
way past full that I'm getting an erratic reading from
the sender that doesn't match the gauge. Now it might
be easier to replace the gauge rather than dropping
the tank and replacing the sender. Anyone know of an
easy way to identify one gas gauge from another in the
boneyard. Proper gauge reads xOhms? when tested with
ohmeter?
Damn I've had the speedo in and out 5-6 times this
week in sorting out problems. Time to go and stand on
my head again. I was hoping to reinstall the driver's
seat today and go cruising. Oh well.
Note: forwarded message attached.
=====
Jim Gruber
Bugsy '68 Sprite (future Bugeye in disguise)
Dayton, OH
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Apr 2002 06:33:33 -0700 (PDT)
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Date: Fri, 26 Apr 2002 08:34:41 -0500
From Brad Fornal <toyman at digitex.net>
To: James Gruber <thistle_3619@yahoo.com>
CC: Spridgets Digest <spridgets-digest@autox.team.net>
Subject: Re: Is my tank half full or half empty
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On our 68, the gauge read 3/4 full regardless when we first got it. I removed
the
tank and pulled the sender. It was frozen in place, I sprayed it down with WD
and
gently started to wiggle it back and forth and it did free up and is 5 years
later working fine. The only thing I would do different is use a better
lubricant
than WD. How long had Bugsy sat before you started all this work on him?
Brad
James Gruber wrote:
> An interesting philosphical questions was presented to
> me tonight. Bugsy's fuel gauge reads empty, dead empty
> with the needle trying to go ever lower still. While
> underneath the rear end yesterday I noticed that the
> Black Ground Wire coming from the sender was hanging
> loose not conencted to a ground. Thinking that was the
> source of the problem I grounded that connenction
> properly and voila I saw the fuel gauge move, and
> move, and move and try to run off of the other end of
> the scale. So which is better half full as I know the
> tank is or half empty which I know it is also.
>
> Now someone mentioned to me something about electrical
> power being reversed going to the sender unit. Power
> needs to go to the ground in this case as the sender
> is a relic of previous positive ground design. I'm not
> sure how to interpret that. Bugsy is a '68 set up for
> negative ground. He does have a '66 1098 engine and
> when I got him from the P.O. the generator had not
> been repolarized for negative ground. I did that part
> correctly when I first got Bugsy and all parts and
> pieces of the electrical system seem to be working
> correctly.
>
> My interpretation of this problem is that I've got a
> bad fuel sender unit. Cheap to replace but a PITA to
> drop the tank to replace the sender unit. Any ideas.
>
> Any problem with leaving things hooked up as is so
> gauge shows full.
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