I'll take a crack at this one.
Have you ever noticed that when you are going down a hill and let off the
pedal, that the engine gets _real_ quiet? That's because when you let off the
pedal, the engine is then going faster than the pedal is telling it to go and
so stops the fuel delivery to slow it down. Conversly, when you push the pedal,
even a little, the "difference" between the-pedal-and-the-engine-speed is now
in favor of it going faster than it now is. So it pumps a lot (relatively
speaking) more fuel to speed it up. But as it nears the equalization point the
fuel delivery is slowed down until the whole thing reaches a ballance point at
the new engine speed. This is the purpose of all that mechanism behind the
actual IP outlets. It measures the engine speed relative to the pedal and makes
adjustments.
Think of it as two pointers, next to each other, that go up and down. When the
engine speed pointer is below the pedal pointer it injects more fuel to speed
things up. When the pedal pointer is below the engine speed pointer it stops
the fuel delivery ALTOGETHER until the thing slows down.
That said, consider what happens when you try to start your car - the pedal
pointer is STILL pointing to the idle speed fuel setting, but the engine speed
pointer is down at zero. This difference is in favor of injecting a LOT of
fuel.
So I have the same problem some have mentioned here - any throttle slows me
down until the engine "catches".
There is so much extra fuel being injected that I actually had to lean out my
alda and back off the idle stop by several turns to get mine to start in this
cold rocky mountain weather this year. (It's been in the low teens on the warm
nights here.) And I had to add 10% gasoline to help it start when it's this
cold. Sometimes I even stick a hair dryer in the engine compartyment when it's
below about 12F in order to get enough warmth to get it to start.
I will replace my block heater as soon as it is warm enough to work on the rig
comfortably. And wait till next year to be glad I did. I also plan to put on
the extra heavy ground cable directly to the engine and finally replace the
starter that has needed replacing for 5 years now. But hey, it works just fine
the rest of the year. :)
Hope this helps.
Bogy.
--- BStromsoe <bstromsoe@yahoo.com> wrote:
> A little help from our engineers out there: Does the gasoline engine "pump
> to the floor . . . floods my cylinders" theory hold true for diesel fuel
> systems? Does holding the pedal to the floor cause flooding of the
> cylinders? Is there any connection between the gas and diesel "pumping the
> pedal" and "flooding" inthat we are talking two different systems for firing
> up and engine?
> Someone wrote:
> "Reason The pump to the floor does not work. I think it floods my cylinders."
>
>
> brian
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