[Mgs] Fuel Pump Replacement - Now Blockage?

[Bob Howard]

Dan,
   Blow back toward the tank the hose that supplies the pump. If you hear
bubbling, air is passing one way and fuel should go the other.   Then
blow the line from pump to carbs. If air passes, fuel should also.  
   The pump should deliver within five seconds. 
   If it pumps longer than that, real pumping/thumping, it is sucking
air.  If an SU can't deliver because the carbs are full, it stops
pumping.  Just this week I thought that the pump was taking too long to
fill the bowls---it was loose clips on the rubber hoses of the suction
side. Tightened the clamps and it is happy.
 Bob

 
On Sun, 14 Jun 2009 10:45:23 -0700 (PDT) Dan DiBiase
<d_dibiase at yahoo.com> writes:
> Ok, been a while but found some time today to finish the replacement 
> of the fuel pump in the '76 B. It buzzes away
> merrily but after 5 minutes, doesn't seem to push any fuel into the 
> fuel filter. So now I am thinking that I also have a
> blockage somewhere in the line. What's the best way to diagnose 
> this?
> 
> I replaced a non-OEM points-type pump with a generic electric pump. 
> It provides 3.5 PSI pressure, so that should not 
> be the issue.
> 
>  Dan D
> Central NJ USA
> '76 MGB Tourer
> '65 MGB Tourer (Project)
> NAMGBR #5-2328 
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