Today's Message Index:
----------------------
1. 08:09 AM - Re: rough running during taxi after landing (Panama Red)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: rough running during taxi after landing |
YEP. Exact same problem.
Keep the boost pump on and the RPMs above 1000. Install a fuel pump
cooling shroud.
On hot days, the problem does not go away, just have to learn to manage
it.
Bob
----- Original Message -----
From: thomas sargent
To: rv-list
Sent: Wednesday, June 13, 2012 2:15 PM
Subject: RV-List: rough running during taxi after landing
This is a question for all of you who have AirFlow Performance fuel
injection, as I do on mt RV-6A. When I start up and taxi around prior
to take off, I have no problem, even in warm Arizona weather. However,
after I've been flying and return to land, taxiing is a problem. The
engine runs very unevenly and almost stops completely some times.
The guys at AFP, and I think they are right, say it is fuel vaporizing
in the skinny stainless steel lines that go from the spider to the
injector nozzles. "These planes do that." I notice on a warm day when
I hit the brakes to slow down for a turn, it always gets worse, as
though the slight decrease in air moving through the cowl aggravates the
vaporization. Turning on the boost pump has no effect.
I should mention that I have a fiberglass cooling plenum which means
there is a bit less enclosed volume over the engine than there would be
if I'd use the stock baffling scheme that has the airseal fabric
pressing against the top of the cowl.
I one time had the thing stop completely as I was turning off the
runway and heard the tower advise the next aircraft to go around.
Embarassing, but at least, I can always restart the engine quickly. If
the fuel flow is a bit higher than you'd use for taxi, the engine
smooths out - also consistent with fuel vaporization.
Does anybody else have this same problem?
--
Tom Sargent, RV-6A N811WT
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|