Author Topic: V7 Fuel filter change  (Read 1543 times)

Offline Kiwi_Roy

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Re: V7 Fuel filter change
« Reply #60 on: May 30, 2021, 08:05:51 PM »
Since only a small percentage of Guzzi owners post on wild Guzzi and an even smaller percentage do their own maintenance I doubt we will ever know how many fail.
Kevin did a reasonable test, pressurized his to over 4 x normal working pressure and it didn't fail.
At the same time a lot of owners don't subject their Guzzis to Ethanol.
I decided to err on the safe side and change mine only to find my bike manufactured in 2017 has an all metal filter so I have a spare I will make available to anyone in the Vancouver area if you have a failure.
72 Eldorado
17 V7iii Special
76 Convert

Moto Guzzi - making electricians out of riders since March 15 1921

Online bad Chad

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Re: V7 Fuel filter change
« Reply #61 on: May 30, 2021, 09:40:19 PM »
There seems there is no evidence ethanol plays any part in all of this, perhaps it does, but we have no meaningful evidence for such.  We do have reports that the stock filter was not designed to be used with gasoline. 
2007 Breva 1100  Red Arrow (and faster than yours!)
2016 CSC 250TT Zongshen
2017 V9 Roamer

Online Zoom Zoom

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Re: V7 Fuel filter change
« Reply #62 on: May 31, 2021, 07:39:53 AM »
For those wondering what it is supposed to look like, you can see it on Mahle's own page here:
https://catalog.mahle-aftermarket.com/eu/product.xhtml?eid=791

I tried to do some digging but was unable to find a document that outlines it use with regard to fuels or being immersed completely. Looking at the picture, (new vs. used), it is evident that something is happening to these filters. What precisely causes the degradation, (ethanol or a combination of additives along with it), I don't know.

John Henry 
A wide, unfettered road ahead,
and the flying motor singing.
Samuel C. Lancaster 1921

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