On 1/2/2012 8:35 PM, wrote:
On Mon, 02 Jan 2012 13:12:47 -0500, X `
wrote:

On 1/2/12 1:01 PM, wrote:
On Mon, 02 Jan 2012 10:04:24 -0700,
wrote:

On 01/01/2012 9:38 PM, Tim wrote:
On Jan 1, 10:22 pm, wrote:
On 01/01/2012 8:26 PM, Tim wrote:

http://www.boatingindustry.com/news/...nt-of-energy-e...

Yeah the article is 3 mo. old but it looks like the E15 is wrecking
havoc on even some 4-stroke marine engines.

I shudder the thought of what it would do to my chainsaws too.

Could have told you that 10 years ago. Real gas burns better and does
less damage.

Oh I knew about it 10 years ago, but some people here might not see a
problem with it.

It's not good stuff especially for carburetor type engines.

While I think fuel injected engines handle it better, they too suffer.
I am in a high altitude area, and fuel millage is up but it should be
down. I suspect it is because we get the 100% gasoline.

But I am sure some congress people invested in ethanol.

Why would fuel mileage be down at a high altitude?


Just the opposite, no? Doesn't the 02 sensor detect exhaust gasses
getting richer as the oxygen in the air thins out, and therefore the
system drops back on the amount of gasoline burned so as to maintain the
proper mixture? If there is less oxygen and you burn less fuel, you get
less power but more miles per gallon? Alas, I am a mere English major,
so I doubt my "understanding" of the physics is correct.






You are correct! Between the O2 sensor and the Mass Flow Sensor, less
fuel will be fed to the engine to maintain the correct stochiometric
mixture. Summer and high altitude contribute to better fuel mileage,
though not necessarily maximum horsepower.

The O2 sensor is a "differentiator", which is to say it develops an
electrical charge based on the "difference" between external and
internal oxygen levels... Like I said before on such small engines there
isn't a lot of room for adjustment by the computer anyway, not to
mention the computer may not really have the capability to fully come to
a "zero or null base" to work it's calculations off of because of the
contradictory information coming from the MAP (manifold pressure)
sensor, and the O2... Just sayin'...