I'm missing something. Robert said he was powered back and went further lean to the point he lost power.  That is a cold cylinder so go after the wire and probe.   Don't start pulling apart engines for a spurious signal that makes no sense at those settings.

Paul
Legacy

On 2012-08-27, at 8:03, "Lancair" <lancair-esp@ustek.com> wrote:

> Hit about 430-450F.
>
> Robert
>
>
>
> -----Original Message-----
> From: Jeff Edwards [mailto:vtailjeff@aol.com]
> Sent: Sunday, August 26, 2012 10:54 AM
> To: lml@lancaironline.net
> Subject: Re: [LML] Spiked CHT
>
> What was the temp? 500F? If so, pull the plugs and bore scope the
> cylinder.
>
> AvSafe
> Jeff Edwards
> 314.308.6719 mobile
> 636.532.5638 office
> Jeff.edwards@avsafe.com
>
> On Aug 25, 2012, at 1:56 PM, "Lancair" <lancair-esp@ustek.com> wrote:
>
>> Last week I had been cruising LoP and during the power back for
>> landing Cyl #3 suddenly jumped 125F and sent the Chelton lady shouting
>
>> into my ear.  That would not be unusual if I had failed to either
>> further lean or go full rich but in this case I had leaned and the
>> other 5 cylinders were OK.  I leaned way back and really lost power
>> and then went full rich, and it finally settled down.  On the return
> flight I reduced power
>> and carefully kept leaning and had no problem.   Yesterday it was
> deja'
>> vu all over again.  Powered back on approach and only #3 went nutso
>> until I leaned even more.  On the return flight there was no
> recurrence.
>>
>>
>> Does this sound like a problem with the injector, with the
>> thermocouple, or ? ? ?
>>
>> Robert Simon
>> ES-P N301ES
>> (TSIO550)
>>
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