Fuel pump parts question

Gary H NC

Fleet Admiral
Joined
Dec 1, 2005
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8,972
I was bored today and thought i would rebuild the 2 fuel pumps.
That took all of an hour...:rolleyes:

anyway,the lower pump had a plastic disc under the spring about the size of a dime or a little smaller.The upper pump had a metal disc just large enough for the spring to ride in.
I was wondering why the difference in size,It seems the larger disc pushing the diaphram would pump more fuel?
Has anyone ever noticed this before? One plastic,one metal..i'm confused.
Wish i would have snapped a picture..:confused:
 

Gary H NC

Fleet Admiral
Joined
Dec 1, 2005
Messages
8,972
Re: Fuel pump parts question

Looking at the BRP site those pumps look the same but have different part numbers...
Maybe thats the difference? Only one small internal part..:confused:
 
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