REFLECTOR: fuel flow irregularly

[Brian Michalk]

Sounds like bubbles in the line.

At work, when we start sucking air through the flowmeter, it goes way 
higher than expected.

Have you done anything to the fuel lines?
I would check for vibrating hoses.  Easy to agitate that fuel.
Check for other hot items touching the hoses.

Also check the fuel filter.  Is your filter before the pump?  I would 
suggest that a filter should go after the pump.

Are you using the new vane style pump?
What air temperature/altitude does this happen?

Richard Ring wrote:
> After 50 hrs. of checking things out and correcting almost every problem 
> I have read about on the reflector, I now have one more.
>  
> This is SRG Franklin/Ivo,
> After approx. 20/30 min. at 2300/23lb I get fuel flow that was 10.5 gph 
> going from 9 to 14.8 and every time you look its diffrent. I turn back 
> for the airport and the engine will quit completely and start again 
> before I can hit the boost pump. I throttle back and land.
>  
> I have 3/8 fuel lines and 1/2 vent lines and they are clean and worked 
> great for 50 hrs. what do you think?
>  
> I would appreciate any input.
>  
> Richard
>  
> 
> 
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