[C320-list] fuel gauge

[Bruce Stanley]

Hi Chris ........2 questions

re faulty Fuel Gauge reading .. mine jumps to FULL and stays there.

Taking your advice I took an OHMs reading from the top of the fuel Gauge.
First I disconnected all of the wires.
The reading settled at 39.6 OHMs.

1) does this 39.6 OHMs indicate anything to you?
2) if I remove the sender from the Tank, do I use Gasket Glue when
putting it back?

thanks for any help

Bruce Stanley /C320#1084/Sydney Australia

On Tue, Jun 24, 2008 at 2:38 AM, Chris Burti <clburti at gmail.com> wrote:
> Yes, I got mine from Seaward. You can test the sender too. Remove the pink
> hot wire and use an ohmeter to test across the lugs, if the tank is full, it
> should read around 120 ohms. If the sender is defective, it is a standard
> fuel tank sender and any local marine supplier can furnish you with one.
>
> On Mon, Jun 23, 2008 at 12:29 PM, Joe Barrett <joe at dolphinmortgage.com>
> wrote:
>
>> Thanks Chris, I'll check the wiring on the Sender first. I might have hit
>> it
>> with a beach chair or something. Where do I get a new Gauge, Seaward?
>> Joe
>>
>>
>> ------------------------------------
>> Worldbanc Financial Group of Naples
>> Joseph T. Barrett jr.
>> Branch President
>> jb at worldbancfinanceulp.com
>> 9010 Strada Stell Court
>> Suite 209
>> Naples, Florida 34109
>>
>> In The Vanderbilt Galleria
>> tel: 239-597-2266
>> tel2:877-437-2262
>> fax: 239-597-7276
>> mobile: 239-777-1880
>> www.worldbancfinanceulp.com
>> ------------------------------------
>>
>> -----Original Message-----
>> From: c320-list-bounces at lists.catalina320.com
>>  [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Chris Burti
>> Sent: Monday, June 23, 2008 12:26 PM
>> To: C320-List at catalina320.com
>> Subject: Re: [C320-list] fuel gauge
>>
>> If it is reading empty, more than likely the problem is in the wiring from
>> the sender to the gauge. The sender can be accessed from the aft port
>> locker
>> and it is easier if you take the shelf out of the aft starboard locker. The
>> sender is a variable resistor attached to a float. Full tank/float high =
>> minimum ohms and needle on gauge full over. Empty tank/float down = full
>> resistance and needle doesn't move.
>>
>> If the hot or ground wire is broken or the hot wire shorted, you get the
>> same reading as maximum ohms. Most failures with the sending unit result in
>> a dead short across the unit giving a "full" reading. A bad gauge often
>> does
>> the same thing. Quick test of the gauge is to jump the light lead to the
>> pink wire lug on the gauge, if it moves to full, check your wiring if
>> doesn't move, replace the guage.
>> On Mon, Jun 23, 2008 at 10:27 AM, Joe Barrett <joe at dolphinmortgage.com>
>> wrote:
>>
>> > Where is the Sender and what does it look like? I have power to my
>> > fuel Gauge (it lights up at night) but reads empty.
>> > Where do you get a new one?
>> > Joe Barrett
>> >
>> > ------------------------------------
>> > Worldbanc Financial Group of Naples
>> > Joseph T. Barrett jr.
>> > Branch President
>> > jb at worldbancfinanceulp.com
>> > 9010 Strada Stell Court
>> > Suite 209
>> > Naples, Florida 34109
>> >
>> > In The Vanderbilt Galleria
>> > tel: 239-597-2266
>> > tel2:877-437-2262
>> > fax: 239-597-7276
>> > mobile: 239-777-1880
>> > www.worldbancfinanceulp.com
>> > ------------------------------------
>> >
>> > -----Original Message-----
>> > From: c320-list-bounces at lists.catalina320.com
>> > [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of
>> > hcreech at comcast.net
>> > Sent: Friday, June 20, 2008 5:21 PM
>> > To: C320-List at Catalina320.com
>> > Subject: Re: [C320-list] fuel gauge
>> >
>> > James,
>> > Bet your sender went south as mine did two years ago.  As I usually
>> > use about 8 gallons a year I did not even bother to fix it.  I sail
>> > and only motor to get sails up and back to slip so I really don't care
>> > about that gauge.  But others have repaired it and i'm sure they will
>> chime in.
>> >
>> > Good luck,
>> >
>> > Herb Creech
>> > Cloud Chaser #606
>> >
>> >
>> >
>> >  -------------- Original message ----------------------
>> > From: "james_delong" <james_delong at bellsouth.net>
>> > > Last week, worked just fine...this week, an inoperable fuel gauge!
>> > > And..the fuel tank is full.
>> > >
>> > > What sequence of checks would you recommend to find the problem?
>> > >
>> > > All the other gauges are working properly.
>> > >
>> > > Thanks,   Jim  #453
>> >
>> > --
>> >
>> >
>>
>>
>> --
>> Chris Burti
>> Farmville, NC
>>
>>
>
>
> --
> Chris Burti
> Farmville, NC
>