Re: [OMC-Boats] Carb and fuel gauge

Andy,

It would be great to hear what the SAE people think.

Lee

On Sep 29, 2009, at 12:30 PM, ANDY PERAKES wrote:

> I have always shut off the fuel (valve on the fuel line in the
> engine compartment) and let it run out as I dump oil down the carb
> as is called out in the winterization section of my OMC owner's
> manual. Yes, it would be better if the carb had a drain plug, but
> I've never disassembled it to go after the small amount remaining.
> Justin is absolutely right though -- full tank, empty carb is
> generally the best for any carbureted engine.
>
> Lee: I'm skeptical of any product that claims "PRI-G goes a step
> further, actually restoring old fuel to refinery-fresh conditions."
> I'll have to check with some of my triboligist friends, but I didn't
> think that was possible. For one thing, once the moisture content
> increases, adding a stabilizer doesn't eliminate it, it just dilutes
> it. I know with engine oil the additives breakdown, reducing
> protection for the engine. Returning some of the additives helps
> (i.e. STP oil treatment), but its generally not as good as fresh oil
> based on the data I've seen. I'll see what I can learn from those
> who supposedly know (i.e. the referenced SAE Fuels & Lubricants
> Standards Committee which I occasionally sit in on).
>
> Andy
> '67 Reveler 155
>
>
> ----- Original Message -----
> From: "Justin DeSantis" <duc1098desmo@...>
> To: "Evinrude & Johnson Boats of the 1960's and 70's" <omc-boats@...
> >
> Sent: Tuesday, September 29, 2009 1:41:53 PM GMT -05:00 US/Canada
> Eastern
> Subject: Re: [OMC-Boats] Carb and fuel gauge
>
> Well, on lots of carbs, there is a drain at the bottom of the bowl. I
> noticed my 2bbl Rochester doesn't have a drain screw. So draining
> would require removal. Or at the least, removing the top of the carb
> and sucking out the fuel with a syringe or turkey baster type thing.
>
> On Tue, Sep 29, 2009 at 1:25 PM, jd <jdood@...> wrote:
> > how do you drain the carb? Does is all run out when you
> disconnect the
> > fuel line or is there another way?
> >
> >
> >
> >
> >
> > On Sep 29, 2009, at 10:04 AM, Justin DeSantis wrote:
> >
> >>> what with an outboard?
> >>
> >> With any engine, the optimum storage is full tank, empty carbs.
> Carbs
> >> don't hold much gas and the less gas there is the quicker is goes
> bad.
> >> So carbs empty to prevent the gas in them from turning to goo and
> >> clogging jets. Full tank to prevent condensation. If theres air
> space,
> >> you can have condensation, this rusts the tank and contaminates the
> >> gas with water. The less gas in the tank, the more room for
> >> condensation. And the higher the ratio of water to gas. Full tank
> and
> >> empty carb. I prefer to drain the carb as opposed to just running
> it
> >> dry. If you drain it, it's all gone, if you run it dry there may
> still
> >> be enough in there to turn to goo. Sta-bil helps. But I prefer to
> rely
> >> on it for the gas in the tank. Again, the more gas, the longer it
> will
> >> last.
> >>
> >>
> >>> I had someone tell me yrs back that it's always a good idea to
> run the
> >>> fuel
> >>> out of the engine after EVERY use.
> >>
> >> Overkill.
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> >
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Received on Tuesday, 29 September 2009