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Excessive fuel consumption

Posted: Fri Mar 24, 2017 9:51 pm
by jonboy
I brimmed my duet tank only ridden about
7.10 miles
Filled it to today for a trip tomorrow and it's
Taken 5 litres of fuel
No leaks so can't work out why

Re: Excessive fuel consumption

Posted: Fri Mar 24, 2017 10:12 pm
by garry inglis
My 3ltr Capri was like that

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Re: Excessive fuel consumption

Posted: Fri Mar 24, 2017 10:27 pm
by holty
maybe its overjetted, what carb, cylinder, and tune is it ?

Re: Excessive fuel consumption

Posted: Fri Mar 24, 2017 10:38 pm
by mick1
I'm assuming a duet tank is the same as a dual tank ?

These double tanks can get air locked and you may think you have filled it when you haven't. I suspect you "filled" the tanks but didn't let them settle, the level then drops suddenly when riding.

A lad who rides with us has dual tanks and his fill ups vary considerably to the rest of us.

Re: Excessive fuel consumption

Posted: Fri Mar 24, 2017 11:34 pm
by jonboy
Mikuni tmx 35
Avanti 225
Standard tank

Is it possible one of the jets has vibrated out
of its place

Re: Excessive fuel consumption

Posted: Fri Mar 24, 2017 11:38 pm
by HxPaul
I've known some Lambrettas that are a bit thirsty,but just over 7 miles per gallon takes some beating.

Re: Excessive fuel consumption

Posted: Fri Mar 24, 2017 11:53 pm
by Toddy
garry inglis wrote:My 3ltr Capri was like thatImage

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:lol: :lol: :lol:

Re: Excessive fuel consumption

Posted: Fri Mar 24, 2017 11:57 pm
by drunkmunkey6969
garry inglis wrote:My 3ltr Capri was like thatImage

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Just spat my beer out.....lol


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Re: Excessive fuel consumption

Posted: Sat Mar 25, 2017 10:38 am
by Tractorman
jonboy wrote:I brimmed my duet tank only ridden about
7.10 miles
Filled it to today for a trip tomorrow and it's
Taken 5 litres of fuel
No leaks so can't work out why
Put a Wal Phillips fuel injector on and I got about 18 mikes on 5lts.

Re: Excessive fuel consumption

Posted: Mon Mar 27, 2017 10:36 am
by ktmh5
mick1 wrote:I'm assuming a duet tank is the same as a dual tank ?

These double tanks can get air locked and you may think you have filled it when you haven't. I suspect you "filled" the tanks but didn't let them settle, the level then drops suddenly when riding.

A lad who rides with us has dual tanks and his fill ups vary considerably to the rest of us.
+1...most likely what has happened.