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HawkerPilot2015
Joined: 10 Jan 2006
Posts: 503
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 Posted: Thu Jun 29, 2006 6:37 pm Post subject: Carb Problem/Idle Problem |
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Ok...I have a source for some info but until I can get in touch with that person, I want to throw this out to the group:
For some reason, my engine started idling kind of high after the engine warmed up. It would start out at 22-25% and make its way up to 35% which makes slowing the thing down for landing a little annoying. We thought we had the problem figured after finding the set screw on the throttle arm was spinning in the carb housing. (This was after it made its way loose during a flight and spun all the way up which in turn did not allow me to get the RPM below 80%. Had to shut off the mags too land.)
Anyway, a friend fixed the screw problem but it is still creeping up to 35%. He has mentioned some folks he has spoken to that it may be a diaphragm issue. The airplane did sit for almost two years without starting and I have been told pressure carbs need to remain "wet" by more than one person.
So, anyone have some thoughts. Just trying to cover my bases by asking everyone!
Thanks in advance!
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viperdoc(at)mindspring.co
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| Posted: Thu Jun 29, 2006 7:22 pm Post subject: Carb Problem/Idle Problem |
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Tim,
Try Bill Blackwell in Pheonix. He is a wealth of info on pressure carbs.
Doc
| Quote: | [Original Message]
From: Tim Gagnon <NiftyYak50(at)msn.com>
To: <yak-list(at)matronics.com>
Date: 6/29/2006 9:54:39 PM
Subject: Carb Problem/Idle Problem
Ok...I have a source for some info but until I can get in touch with that
person, I want to throw this out to the group:
|
| Quote: |
For some reason, my engine started idling kind of high after the engine
warmed up. It would start out at 22-25% and make its way up to 35% which
|
makes slowing the thing down for landing a little annoying. We thought we
had the problem figured after finding the set screw on the throttle arm was
spinning in the carb housing. (This was after it made its way loose during
a flight and spun all the way up which in turn did not allow me to get the
RPM below 80%. Had to shut off the mags too land.)
| Quote: |
Anyway, a friend fixed the screw problem but it is still creeping up to
35%. He has mentioned some folks he has spoken to that it may be a
|
diaphragm issue. The airplane did sit for almost two years without starting
and I have been told pressure carbs need to remain "wet" by more than one
person.
| Quote: |
So, anyone have some thoughts. Just trying to cover my bases by asking
everyone!
|
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ggg6(at)att.net
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| Posted: Thu Jun 29, 2006 7:44 pm Post subject: Carb Problem/Idle Problem |
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Tim Gary Gabbard here, some years back I had a high idle all of a sudden, it went to 36%, I found a sizeable intake leak, as soon as I fixed that, it went back to normal idle.. Just a thought.. Gary
[quote]-------------- Original message from "Tim Gagnon" <NiftyYak50(at)msn.com>: --------------
| Quote: | --> Yak-List message posted by: "Tim Gagnon"
Ok...I have a source for some info but until I can get in touch with that
person, I want to throw this out to the group:
For some reason, my engine started idling kind of high after the engine warmed
up. It would start out at 22-25% and make its way up to 35% which makes slowing
the thing down for landing a little annoying. We thought we had the problem
figured after finding the set screw on the throttle arm was spinning in the carb
housing. (This was after it made its way loose during a flight and spun all the
way up which in turn did not allow me to get the RPM below 80%. Had to shut off
the mags too land.)
& Brows |
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dsavarese(at)elmore.rr.co
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| Posted: Fri Jun 30, 2006 3:21 am Post subject: Carb Problem/Idle Problem |
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Tim,
I agree with Gary. You may have an intake leak. Check all your intake tube gland nuts and intake collars. If you have an intake drain kit, be sure all the fittings are tight as well.
Dennis
[quote] ---
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