Re: [OMC-Boats] Carb and fuel gauge

From: Lee Shuster <lks@...>
Date: Sun, 20 Sep 2009 17:32:34 -0600

My take on you CARB float parts-source problem:

Your auto parts store simply doesn't have access to the same suppliers
that the Rochester Carb (you do have a Roc-cha-cha 2GC, right?)
Rebuilders do.
So dump your local (not so smart) auto-parts sources and go global, man.

There are dozens and dozens of sources providing rebuilt Rochester "2-
Jet" (the 2G-series; 2GV, 2GC) carbs and parts. These carbs were used
on literally millions of GM-powered vehicles from 1955 - 1978, common
as dirt, really!
Remember the '55 Chevy which introduced the world to the small block
V-8? Or how about the Tri-Power Pontiac GTO? They can't rebuild
them without having a reliable source for new floats, duh! So you
just have to get smart, that's all.

Do a google search on Rochester 2 GC (or Rochester 2-Jet) and you'll
find what you need. The internet is indeed, your friend!

It took me about 30 seconds to find (I would hate to make a living
doing nothing but google searches for people):


Just order an "F10" float and be done with it.

There are probably many other sources, as well, so have at it. (And
BTW, the fuel gauge and sender is all very common, off-the-shelf,
"industry standard" (240-33 ohm) Stewart-Warner stuff.

Nothing special about the FUEL GAUGE wiring, sender or gauge (small 18
GA ORANGE was originally used, as very little current is passed from
sender to gauge.)
See my website
    If you reading an OMC factory wiring diagram is helpful.


On Sep 20, 2009, at 4:02 PM, Justin DeSantis wrote:

> Well, I just pulled the carb off it. Turns out it may not be my fuel
> gauge. My float was completely full of gas again. I sealed up at least
> 5 holes the other day when I rebuilt it, and now there's more. And it
> looks like it's so old and fragile that no matter how much I patch it
> up, it's going to keep leaking. I don't want to patch it anymore and
> risk being stranded in the river again.
> So here's the problem, according to the auto parts store, the float is
> no longer available. So what can I do? Is there another float that
> will match up? Anyone have a fix for the original one? I need to find
> a way to get a float in there. My fuel gauge may still be A problem,
> but it isn't THE problem.
> On Sun, Sep 20, 2009 at 3:38 PM, Doug Julien <dfjulien@...>
> wrote:
>> Hi All:
>> I have a spare fuel/ammeter gauge from a '69 Sportsman 120 if any
>> of you determine that the gauge itself is the problem. Shipping is
>> $10.35 max and probably less. Only proviso is that you offer it to
>> someone else on this list if it doesn't fix your problem. See photo!
>> -Doug Julien
>> --- On Sun, 9/20/09, BLDFW <bldfw@...> wrote:
>>> From: BLDFW <bldfw@...>
>>> Subject: Re: [OMC-Boats] Carb and fuel gauge
>>> To: bchowk@..., "Evinrude & Johnson Boats of the 1960's
>>> and 70's" <omc-boats@...>
>>> Date: Sunday, September 20, 2009, 12:20 PM
>>> Hmmm.... Mine has the
>>> original pink wire that runs to the gauge. It
>>> doesn't appear to be a heavy gauge. After I pulled
>>> the tank and cleaned it out, I checked the fuel
>>> sending unit which appeared to be working fine. I
>>> did have to replace the barrel float. I'd pull the
>>> sending unit, hook it up to power and the move the arm up
>>> and down to check it's functionality and what it reads
>>> on the gauge. If it's working, and the full up and
>>> down sweep registers accordingly on the gauge, it's
>>> possible the arm just needs to be bent a bit to make more
>>> accurate when sitting in the tank.
>>> In any case, filling up each time is not a bad idea
>>> though probably not good at the end of the season when you
>>> find you have a near full tank that likely will sit over the
>>> winter. I'm keeping mine low at the moment and
>>> will siphon any residual out when I put the boat up for
>>> good.....Of course that assumes I ever get mine running
>>> properly this season! sigh......
>>> I did spend the morning attaching and adjusting my new
>>> bimini top....and enjoying it's shade while sitting in
>>> the driveway behind the wheel.....fantasizing about zooming
>>> across the lake!
>>> Minor update....after all my charging problems, I
>>> finally figured out that my original voltage regulator so no
>>> need for a new one....the problem was that my
>>> brand new alternator was not charging. Apparently it
>>> was never charging from the get go. Can't prove
>>> it. I sent it back a week ago Friday and now
>>> waiting to see if they will exchange it or tell me I
>>> broke it and will have to pay to get it back and in working
>>> order.
>>> Always something.
>>> -Bill
>>> Dallas, TX
>>> 1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive
>>> --- On Sun, 9/20/09, BC Howk
>>> <bchowk@...> wrote:
>>> From: BC Howk <bchowk@...>
>>> Subject: Re: [OMC-Boats] Carb and fuel gauge
>>> To: omc-boats@...
>>> Date: Sunday, September 20, 2009, 11:17 AM
>>> I have the exact same issue, in my case I believe the
>>> wire to the sender is too small (it is CLEARLY not factory
>>> wiring), I bought one of those universal senders and been
>>> looking around on the internet for fuel gauge calibration
>>> techniques (I REALLY want to keep my factory gauge)but have
>>> not yet really focused in on fixing the problem and
>>> installing the new sender.....
>>> I just tend to fill it up anytime I'm heading out,
>>> wether it needs it or not
>>> I'll be interested in what any of ya'll have
>>> done as well.
>>> Cheers,
>>> B.C.
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Received on Sunday, 20 September 2009

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