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I have verry same thing with -2539H- . a and p
wants to put new carb on I say no .Iordered new induction hoses. mine
looks fairly old/ Dont know if that will od it I will sure send it as soon as I
find out the couse Regards Ken C in MO 2539H
-----Original Message-----
From:
Pat and Dallas Larson <[EMAIL PROTECTED]>
To:
Ercoupe List <[EMAIL PROTECTED]>
Date:
Monday, August 09, 1999 12:13 AM
Subject: IDLE PROBLEM??????
Hi Gang,
My Ercoupe (N93555 pictured in [EMAIL PROTECTED]) just
developed a rough-running problem at engine rpm 1000 and below. I had
no problems during my three-hour flight back from Oshkosh last Monday.
Didn't fly it until Friday as I wanted to warm it up before doing my 25-hour
oil change. After I started it up and taxied to the fuel pumps, I
noticed it was running rough at lower rpms. After the fill, I started
it up and proceeded to taxis to the runway for take-off. After
taxing about twenty feet, it quit. I primed it twice and started it up
again. I proceeded to taxis at 1200 rpms to the end of the
runway and did my run-up. I flew it for nearly a half-hour and then
landed. No problems in the air! When I pulled off the runway to taxis
the engine stopped due to low rpms. However, it started up
immediately. I believed I primed it once. Then I believe I
taxied with the carb heat on which seemed to be a marked improvement.
I returned to my hanger and proceeded to change the oil and also cleaned the
air filter, which was quite dirty. I thought it might not be letting
in enough air at low rpms. At higher rpms the prop would be forcing a
higher volume of air to the carb. As it was parked, I ran it without
the air filter in, thinking that there would be no restriction to the air
flow. Still ran rough and killed several times.
Saturday, I asked a couple A&P mechanics
their opinions. Didn't get much help as they weren't too adept working
with carbs. I proceeded to experiment on my own. When it would
just about die, I would pull the primer and it would respond dramatically,
then shortly start running rough again. Or, after the engine was
warmer, I would pull the carb heat when running at rpms 1000 and below. Ran
pretty good then. I also turned the adjustment screw both directions(without
the carb heat) one-half turn at a time up to a full turn with no appreciable
results. One A&P said that I was too fussy and that these older
antiques just run this way. Well, it had been running great up till
now and I don't buy that idea anyway.
Today, I flew it two hours. No problems in
the air. After my first landing, the engine stopped as the rpms were
around 700 as I was turning off the runway. I didn't have the carb heat on
that time. From that point on I left my carb heat on for rpms 1000 and
below. No problems. I'm not comfortable having the engine perform this
way. HAVE ANY OF YOU HAD A SIMILAR SCENARIO AND COULD RECOMMEND
A SOLUTION TO MY PROBLEM? I will have a qualified mechanic perform any
corrective procedures that will be necessary. Is there an idler jet
that needs to be replaced? Do carb floats get out of position and
stick? Is the engine not getting enough fuel or air or
both?
If any of you can shed some light on this subject,
I would be most appreciative. Thank you in advance for any information
regarding my dilemma.
Dallas
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