Message-ID: <3F280CE3.2050808@earthlink.net>
Date: Wed, 30 Jul 2003 11:22:27 -0700
From: Dale Smith <timepilot@earthlink.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] auto troubleshooting question
References: <list-2507215@logan.com>
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Fly Bum wrote:

>Trying to help a friend get his recently purchased 2nd
>gen running.  He has a street ported 13b with a weber
>copy side draft carb.  The engine starts and runs fine
>for about 3 minutes and then it starts
>backfiring/popping (a little) and loses power and
>quits.  Let it sit for a while and it will start back
>up and run ok again for another 3 minutes.  
>
>I dont think its the fuel pump cutting out since he
>has it hardwired on and it seems to be putting out
>plenty of flow.  
>
>What else to look for?
>
>Thanks guys!
>
>Joa
>
>  
>
Joa,

 From my own 1 gen experience .... replace your fuel filter and check 
the lines to and from it for even the slightest indication of kinking 
(metal line take a rock hit?) ... sometimes these lines "come up to 
temperature" and kink. Replace non metal lines even if they are "old", 
but look O.K.

Initial indicated fuel flow is not always the same as a good system 
under pressure. Sometimes it is only 1/2 the equation. If you have a 
fuel return line, to check it's one way "check valve function", 
disconnect it .... and blow through it ... "easy does it" ... to check 
for proper operation (no flow one way, easy flow the other) ... you 
might want to check the lines around it also.

Sure sounds fuel related.

Good luck,

Dale Smith