[email protected][_1_]
September 19th 06, 10:45 PM
On Tue, 19 Sep 2006 05:36:55 +0100, Peter >
wrote:
>IO-540-C4, Socata TB20
>
>Just got this today. Landed, taxied off the runway, and before doing
>the post-landing procedure (ie, with the mixture on full rich and the
>fuel pump still running) noticed the revs to be very low, c. 500 and
>then unsuprisingly the engine stopped.
>
>Initially I suspected the idle setting had got moved. Did a start (hot
>start, the usual lots of cranking) and all was fine. Idle is perfect
>at 700rpm, just the way it was set up by a very good Socata engineer a
>couple of years ago. Mag checks fine, EDM700 fine.
>
snip
RPM rise when pulling the mixture to ICO? Cold vs. hot?
If it's hard to determine @ 700, try it closer to 1000.
You may not be able to see it on the tach, but you should be able to
hear a slight RPM increase as the mixture is pulled. No rise, idle
mixture is too lean-more than a little (25-50 RPM), idle mixture too
rich.
Ensure that the crank on the servo is positively contacting the idle
rpm stop before the throttle control reaches the end of its travel...
TC
wrote:
>IO-540-C4, Socata TB20
>
>Just got this today. Landed, taxied off the runway, and before doing
>the post-landing procedure (ie, with the mixture on full rich and the
>fuel pump still running) noticed the revs to be very low, c. 500 and
>then unsuprisingly the engine stopped.
>
>Initially I suspected the idle setting had got moved. Did a start (hot
>start, the usual lots of cranking) and all was fine. Idle is perfect
>at 700rpm, just the way it was set up by a very good Socata engineer a
>couple of years ago. Mag checks fine, EDM700 fine.
>
snip
RPM rise when pulling the mixture to ICO? Cold vs. hot?
If it's hard to determine @ 700, try it closer to 1000.
You may not be able to see it on the tach, but you should be able to
hear a slight RPM increase as the mixture is pulled. No rise, idle
mixture is too lean-more than a little (25-50 RPM), idle mixture too
rich.
Ensure that the crank on the servo is positively contacting the idle
rpm stop before the throttle control reaches the end of its travel...
TC