Colyn:

Thanks for your continued help.  Today I removed every line on my engine (Continental IO520) that carries fuel.  Everything on the engine side from the output side of the gascolator (sp?) through to the spider injector unit has been removed and will be shipped to a company that specializes in making up fuel lines.  I believe the lines removed today are the original ones put on some 14 years ago. I have no idea if the fuel lines are the culprit but I have looked hard at everything else I can think of and still no remedy.

With regard to your message today...I have heard of the altitude compensated devise but like you, am not at all familiar with it.

I have copied the list on this response.  Perhaps someone following this thread will jump in and make some much needed suggestions.

Sent from my iPad
Berni Breen
Bbreen@cableone.net

On Jun 2, 2011, at 9:15 AM, Colyn Case <colyncase@earthlink.net> wrote:

> Berni,
>
> There's an altitude compensated part of the mixture system which involves an aneroid.
> I wonder if you have a problem with that.
> Unfortunately I'm not familiar with exactly how that works.
> I would guess Craig Berland, Fred Moreno, Brent and a few others know.
>
> I do know that it has caused 2 fatals and a couple incidents.  All involved going to full rich.
>
> Colyn
>
> On May 31, 2011, at 8:16 AM, Berni wrote:
>
>> I incorrectly identified my engine as an IO540...it is a continental IO520
>>
>> Sent from my iPad
>> Berni Breen
>> Bbreen@cableone.net
>>
>> --
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>