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willysmjeeps.com :: View topic - M38A1 - FUEL PUMP DIAPHRAGM
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M38A1 - FUEL PUMP DIAPHRAGM

 
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pduske
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Joined: Feb 01, 2006
Posts: 30
PostPosted: Tue Jan 28, 2020 3:58 pm    Post subject: M38A1 - FUEL PUMP DIAPHRAGM Reply with quote
Hi there,

is it correct that the modern gasoline is much more agressive (ethanol) thus much sooner kill the diaphragm in our fuel pumps?

Or/and the reproduction diaphragms are of lesser quality?

I appreciate too read your thoughts and suggestions...

Philipp
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Ramsey 50R setup
USMC spec. PowrLok front & rear
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Ivoryring
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Joined: Apr 19, 2016
Posts: 66
Location: Hopkinton, NH
PostPosted: Tue Jan 28, 2020 4:10 pm    Post subject: Reply with quote
Others can speak more authoritatively to this topic, but it is my understanding that current production gaskets in rebuild kits (i.e. not NOS = New Old Stock) can handle the ethanol.

Personally, while I like NOS for metal parts, I am very leary about using 60, 70 year old rubber (or canvas or other flexible parts) anywhere on my Willys.
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