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Looking for some help with loss of power/MP

Posted: 13 Sep 2017, 13:36
by jasonstory44
Hi guys, trying to figure out what I may be doing wrong here.

I keep losing power or manifold pressure about 10-15 minutes into each flight and end up having to make an emergency landing.

All engine instruments are in the green...not sure what I am doing wrong.
Figured I am mistreating the engine but when I return to the hanger it says its in excellent shape. No fouled plugs etc.
Also not out of fuel.

Any suggestions where I may be going wrong here?

Thanks Jason

Re: Looking for some help with loss of power/MP

Posted: 13 Sep 2017, 13:39
by J van E
Check the weather around you: you might need to use the carb heat!

Re: Looking for some help with loss of power/MP

Posted: 13 Sep 2017, 13:42
by jasonstory44
ah, certainly a good thought. Didn't think I would need it flying in summer weather. Hadn't occurred to me

Re: Looking for some help with loss of power/MP

Posted: 13 Sep 2017, 13:48
by Nick - A2A
Yeah, hot and humid weather, or any conditions when there's moisture in the air (such as rain) present a risk of carburettor icing in the Comanche. Take a look at this article and the included chart if you get a few moments Jason, it gives a good summary of the phenomenon: Melting Moments: Understanding Carburettor Icing.

Cheers,
Nick

Re: Looking for some help with loss of power/MP

Posted: 13 Sep 2017, 14:59
by jasonstory44
Thanks guys. You guys rock

Re: Looking for some help with loss of power/MP

Posted: 14 Sep 2017, 04:35
by Lewis - A2A
Yup sounds like carb heat for sure, if in doubt/questionable conditions turn it on is a good rule in the simulator for it.

thanks,
Lewis

Re: Looking for some help with loss of power/MP

Posted: 14 Oct 2017, 18:59
by Scott - A2A
And just in case there is any doubt, I've spent hours in the "soup" observing and timing how long it takes for the carb to start icing up. And we have it spot on just like the real airplane :)

Scott.

Re: Looking for some help with loss of power/MP

Posted: 04 Nov 2017, 11:09
by bobsk8
Scott - A2A wrote:And just in case there is any doubt, I've spent hours in the "soup" observing and timing how long it takes for the carb to start icing up. And we have it spot on just like the real airplane :)

Scott.
Had it happen last night on an IFR approach. Makes things very exciting until the ice melts.