[Mgs] Fuel Pump?

[Robert's New iPad]

Hi Mike,
   Furious pumping as you describe it sounds like an air leak on suction side of the pump to me.  It would not be audible when you were driving.
   If the tank pick-up is clogged, I do not believe the pump would be able to work quickly, if at all.  
  You could try to simulate the condition at In N Out by disconnecting fuel line at the carb connection and pumping a couple of quarts into a container.  It should show a steady pump,pump,pump with no air bubbles.    As the pump is cooled by fuel passing through it, this test will not harm the pump.
Bob


> On Jan 10, 2021, at 4:32 PM, Michael MacLean <rrengineer.mike at att.net> wrote:
> 
> I went to In N Out for lunch today.  The line was very long so I had to inch forward and was stopped numerous times for a few minutes in between.  The fuel pump on my 69 GT started pumping furiously like I was running out of gas while stopped halfway through the line.  The car was still running.  I got up to the first window to pay and the idle dropped to less than 500 rpm.  In a minute or so later the engine just quit.  There is over a half tank of gas in the car.  I tried starting it several times, but it would just fire and die.  After several attempts the car started again, all the while the fuel pump was going like mad.  After getting out of the line the fuel pump slowed down like normal and you did not hear it after what I assume was a full float bowl.  No issues going home the 4 or 5 miles.  Does that sound like my fuel pump is going out or the tank pickup is clogged?
> Mike MacLean
> 1969 MGB GT
> 1960 Bugeye
>  1956 Austin Healey BN2
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