Percy,
My 415C with a C-90 engine does the same thing.
I've found it is much worse when the engine is cold. I've
also found it seems to run better when I first start it and
am taxing out for take-off if I pull the carb heat on (even
before the engine has warmed up).
As you have found, being gentle with throttle movements
prevents the problem most of the time.
Dan C
On Feb 25, 2009, at 7:23 AM, Gordon Smith wrote:
Have you tried to richen the carb adjustment. Also increase the
idle about 50 - 75 idle rpm.?
THE SENILITY PRAYER :
Grant me the senility to forget the people
I never liked anyway,
the good fortune to run into the ones I do, and
the eyesight to tell the difference.
--- On Tue, 2/24/09, Percy <[email protected]> wrote:
> From: Percy <[email protected]>
> Subject: [ercoupe-tech] Hesitation
> To: [email protected]
> Date: Tuesday, February 24, 2009, 11:09 PM
> Rather than look at over 400 hits on carb in the archives, I
> decided
> to ask for a new recount of group wisdom.
> I'm working with an Ercoupe, C-75. Has the Stromberg
> NA-53A1. What
> it does is "hesitate" when the throttle is
> advanced. It starts and
> idles just fine, but accelerating the engine up to a
> thousand RPM or
> so causes it to miss and almost die. By retarding the
> throttle, it
> goes back to smooth idle. After getting over the 1000 -
> 1300 RPM
> point, it responds to the throttle fine again. Any Ideas?
> Today I inspected the intakes and they looked good. I
> took the
> screen out of the carb and it was clean. Tightened the
> prime plumbing.
> The discussion lately about the "automatic
> rich" got me to thinking
> if that has something to do with it. I wouldn't know
> one if it bit
> me. Could this be an "accelerator pump" issue?
> My IA says something
> about removing the bottom plugs, but I don't want to go
> there as is
> doesn't make sence to me right now.
> So lay it on me, Sports Fans. And does any body have a
> line on the
> books for that beast?
> Percy in NM, USA
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
