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Date: Mon, 21 Mar 2005 09:16:31 -0600
From: Jim Sower <canarder@frontiernet.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Fuel pump question
References: <list-813397@logan.com>
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John,
Did you try to compensate with mixture before switching pumps?  You said 
something on the phone about your charging system and battery setup that 
I wasn't clear on.  Could you elaborate a bit?
Sounds like you have the big pieces pretty well under control. 
Great going ... Jim S.

>-----Original Message-----
>From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
>Behalf Of John Slade
>Sent: Sunday, March 20, 2005 10:55 PM
>To: Rotary motors in aircraft
>Subject: [FlyRotary] Fuel pump question
>
>
>Fellow rotary people;
>
>I did another 4 hours over the weekend. Everything was pretty much plain
>sailing.
>
>I'm having a problem with one of my fuel pumps and was wondering if anyone
>else has seen anything similar. The pump seems to work ok for 10 minutes or
>so, then the pressure drops off maybe 5 PSI. If I leave it the mixture drops
>off the scale and the engine starts to falter. As soon as I switch to the
>right pump the pressure comes back up and the mixture comes back to the
>middle. Leave it for another 10 minutes and it'll be ok for a while, then
>back to the same scenario. I checked the pump after a flight and it was
>quite cool. Check it in the hangar and it puts out exactly the same as the
>other pump. I cleaned the filters quite recently and there was no sign of
>blockage.
>
>I'm guessing I need a new pump.
>John (29.2hrs. Wish I could have an autotune chip without being grounded for
>a week)
>
>
>  
>
>>> Homepage:  http://www.flyrotary.com/
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>>>      
>>>
>
>
>  
>
>>> Homepage:  http://www.flyrotary.com/
>>> Archive:   http://lancaironline.net/lists/flyrotary/List.html
>>>      
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>
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>  
>