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Jun 14th, 2026
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Joined: Jul 2016
Posts: 88
Likes: 1
Just Getting Started
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Just Getting Started
Joined: Jul 2016
Posts: 88
Likes: 1
I had the same issue, it doesn’t have a positive release location. I found that “jiggling it” when the tab is in the open position does the trick.


Mike
1982 4/4
1999 +4
2004 Roadster S1
2010 Roadster S2
2021 Plus 6
Joined: Jul 2007
Posts: 27,802
Likes: 749
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I am posting these photos for Andy. It does look a bit Mickey Mouse to me.
He told me:-

"Hi John,

Here is the photograph and the diagram extracted from the manual. Photograph shows how mine looks when trying to open it. The diagram from the manual shows how it should look.

A picture paints a thousand words and al that!!

Cheers,

Andy"
[Linked Image]
[Linked Image]


JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
Joined: May 2022
Posts: 101
Likes: 5
L - Learner Plates On
OP Offline
L - Learner Plates On
Joined: May 2022
Posts: 101
Likes: 5
Thank you for posting, John.


Andy
2022 Plus Four / San Marino Blue
Joined: May 2011
Posts: 1,444
Likes: 9
Has a lot to Say!
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Has a lot to Say!
Joined: May 2011
Posts: 1,444
Likes: 9
I have a late Trad Roadster fitted with this new type of fuel cap. I have had the same issues with mine not always locking shut. My dealer greased it and it's generally better now, but not perfect.


David
2020 Roadster 3.7 Dove Grey.
Joined: Jul 2007
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Just talked at lunch to a plus four owner who has the same issue


JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
Joined: Nov 2015
Posts: 8,663
Likes: 488
Just barreling along
Needs to Get Out More!
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Just barreling along
Needs to Get Out More!
Joined: Nov 2015
Posts: 8,663
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Try some silicone grease on the inner plastic parts that rotate against each other & wipe a thin layer inside the filler socket too, I have to do the Roadster every 6 months or so


Jon M
Joined: Apr 2022
Posts: 11
R
New to Talk Morgan
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R
Joined: Apr 2022
Posts: 11
Good evening.
I am having the same or similar problem.
In the petrol station today wondering if I can fill her up!
Jiggling works but not really sure what is happening!

Joined: May 2022
Posts: 101
Likes: 5
L - Learner Plates On
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L - Learner Plates On
Joined: May 2022
Posts: 101
Likes: 5
Let's face it, it is just a poor piece of design.

I did investigate converting mine to a Monza style filler only to discover the same pressed steel tab arrangement hiding underneath the Monza outer cap!


Andy
2022 Plus Four / San Marino Blue
Joined: Nov 2010
Posts: 19
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Posts: 19
Check that in refitting the retaining cable is aligned so that it retracts through the breather holes properly - if not it fouls the housing of the cap making it difficult to open. The breather plate rotates - on mine the cable needs to be in the six o’clock position to slide away easily.

Joined: Jan 2022
Posts: 91
Likes: 2
Just Getting Started
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Just Getting Started
Joined: Jan 2022
Posts: 91
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Had lunch today with a few members of the Morgan Sports Car Club and it appears most CX chassis owners have trouble with the filler cap. My table chum told me there is a factory crude fix, in that part of the metal inside the cap is removed. He has had no subsequent problems.

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