[Rhodes22-list] My 9.9 is having some trouble...

[Rick Lange]

Plus the problem of oil seperating from the gasoline if you don't have oil
injection on a 2 stroke.

Rick

> I have heard of a lot of boaters having problems with fuel filters/water
> separators this year and the one recurring cause for all the trouble
> tends to be Ethanol in the fuel. I thought you might like to see this.
>
> Here is a bulletin from Yamaha, But it pertains to ALL ENGINES, NOT just
> Yamahas.
> SUBJECTS: Ethanol Fuel Blends - All Model engines.
>
> Ethanol Fuel Blends - All Models
> As of spring 2006, most gasoline refiners will switch to ethanol-blended
> fuels. This may present a challenge for
> boat builders, dealers, and boaters in the months ahead. Until recently,
> refiners have primarily used the chemical
> MTBE (Methyl Tertiary Butyl Ether) as an additive "to oxygenate" fuel,
> thereby, reducing emissions. Unfortunately,
> the chemical has been associated with ground water pollution. As a
> result, most refineries have chosen to remove
> it from their blends. Using ethanol in place of MTBE solves the ground
> water issue, since ethanol has a very short
> life in the environment before it is broken down chemically by nature.
> Properties
> Both consumers and those in the boating industry should be aware of the
> following characteristics of ethanol, even
> when blended in ratios of as little as 10 percent:
>
> 1. Ethanol attracts and absorbs moisture from the air. That means
> boaters will likely face more fuel contamination
> issues from water absorbed through their fuel tank vents.
>
> 2. Ethanol can dissolve some solid materials (e.g., varnish or even
> oxidation in steel and aluminum tanks)
> commonly found in fuel tanks, thereby contaminating the fuel.
> Additionally, it can loosen any corrosion or
> particulate matter in the fuel sys-tem.
>
> 3. In some cases, ethanol has been known to dissolve components of the
> fuel system itself (e.g., fiberglass fuel
> tanks). However, modern fuel hose is made to withstand the effects of
> ethanol exposure.
> 4. Ethanol blends can react chemically with MTBE fuel blends, causing
> additional contamination.
>
> Recommendations:
> Fuel blends using as much as 10 percent ethanol are appropriate for use
> in all of Yamaha's current outboard
> models. Yamaha does not recommend the use of fuels with higher
> concentrations of ethanol (e.g., E85, which
> contains 85 percent ethanol) or any other fuel blend that contains more
> than 10 percent ethanol. In addition,
> Yamaha recommends boat builder partners and boaters (as applicable) take
> the following steps to mitigate the
> potential impact of ethanol in motor fuel:
>
> 1. Use fuel system components that are compatible with ethanol blends or
> replace those in use that are not
> compatible (e.g., fiberglass fuel tanks).
>
> 2. Avoid co-mingling MTBE and ethanol-blended fuels. As a precaution,
> boaters should be advised to use only one
> supplier for fuel purchases in the months ahead to ensure constancy
> during the industry changeover period from
> MTBE to ethanol blends.
>
> 3. Install a Yamaha mini-10(tm) filter or 10-Micron filter. The
> 10-Micron filter is designed for use on boats with
> Yamaha outboards. The smaller mini-10 is designed for smaller boats with
> engines 115hp and under. Both
> Yamaha products filter out contami-nants and separate water from fuel.
> The mini-10 features an aluminum head
> and is made from coated steel inside and painted steel outside to combat
> corrosion. The 10-Micron filter features
> either an aluminum or stainless steel head and is also made from coated
> interior and painted exterior steel. Both
> meet all U.S. Coast Guard and ABYC (American Boat and Yacht Council)
> standards. (This filter will work on other
> engines besides Yamaha call the service department for details)
>
> 4. Consumers should be encouraged to carry spare filter cartridges in
> the event the filter element becomes
> clogged with contaminants while the outboard is in use.
>
> Related Considerations:
>
> All Yamaha products, rigging, accessories and parts, including Yamalube
> lubricants and fuel stabilizers are
> compatible with fuel blends using up to 10 percent ethanol.
>
> Here are a couple suggestions:
>
> 1.You should run as much of the old fuel out of your tank as possible
> (with out running out) before putting the
> Ethanol fuel in your tank. You should not mix the two.
>
> 2.When you start using the Ethanol Fuel you should install a 10 Micron
> fuel filter.
>
> 3. The fuel filter should be changed every 50 hours.
>
> 4. Carry an extra fuel filter with you on the boat.
>
> __________________________________________________
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>



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