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Misting Gauge
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Poster Nick Burns Offline
Posted 11/09/17 08:30 AM
I've never driven a Morgan before and I was quite surpised to see misting in two out of three gauges. However this seems to be a known issue:

Maintenance and Servicing: Workshop note - Misting gauges

Is this a common issue or a rather rare occurrence?
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#471974 - 11/09/17 09:33 AM Re: Misting Gauge [Re: Nick Burns]
Roger Tapley Offline
Has a lot to Say!

Registered: 26/09/13
Posts: 1045
Loc: Kent England
Correct it's aMorgan sir they all do that!
RogT Old Git Racer ex 4/4 sand 2013
+4 GDI Royal Ivory 2015
Ford Fiesta ST2

#471975 - 11/09/17 09:34 AM Re: Misting Gauge [Re: Nick Burns]
Hamwich Offline

Charter Member

Registered: 28/04/08
Posts: 5346
Loc: Gloucestershire, UK
It's very common. so much so that if one's instruments don't mist up it's a cause for comment.

The causes and possible solutions have been discussed for generations, but no-one so far has come up with a definitive explanation (beyond the obvious, which is that there's warm moisture laden air inside the instruments which is being cooled to its dew point by the cold air in the upper part of the cockpit).

DaveW is currently drilling holes in his instruments in a strategy to promote better air flow. I've put in LED bulbs in an attempt to reduce the temperature inside the instruments. Others are toying with alternative solutions like wiring in additional fans.
Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 1957 R4 CV, 2005 Ferrari Vipar

#471978 - 11/09/17 09:58 AM Re: Misting Gauge [Re: Nick Burns]
DaveW Online   content
Roadster Guru
Member of the Inner Circle

Registered: 11/12/08
Posts: 14609
Loc: South Yorkshire
The smaller gauges are worse than the larger ones. My large ones only mist in extremely cold weather when the roof is down. The fuel gauge seems to generate the most heat/condensation.
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

#471987 - 11/09/17 11:42 AM Re: Misting Gauge [Re: Nick Burns]
Stewart S Offline
Wave & smile... It's a Morgan
Talk Morgan Guru

Registered: 14/06/14
Posts: 8400
Loc: Lancashire, England
It's also worth knowing that this isn't just a Morgan thing

A quick search on the internet reveals that just about every classic car forum where the vehicles tend to be open cockpits have similar posts.

the ingredients are:

open cockpits
glass fronted instruments (hence why modern polycarb intrument fronts in open cars dont do this)
weather- very cold mornings and then driving in warmer conditions

There are two really good things about this happening: 1. You are alive; 2. you are driving your Morgan

#471990 - 11/09/17 12:29 PM Re: Misting Gauge [Re: Nick Burns]
Budster Offline

Charter Member

Registered: 07/08/11
Posts: 5740
Loc: Devon
The gauges on my 4/4 have always misted.
It's never been an issue for me, as my spectacles also mist up.

#471991 - 11/09/17 12:46 PM Re: Misting Gauge [Re: Nick Burns]
Nick Burns Offline
New to Talk Morgan

Registered: 31/08/17
Posts: 9
Loc: Ahrensburg, Germany
Thanks to all for your feedback on this topic.
I'm delighted to hear to own the real thing and not a real lemon instead!

Nick Burns
4/4 Two Tone Green 80th #68

Edited by Nick Burns (11/09/17 01:04 PM)
Edit Reason: typo

#472011 - 11/09/17 04:07 PM Re: Misting Gauge [Re: Nick Burns]
Paul F Offline

Talk Morgan Enthusiast

Registered: 20/08/10
Posts: 1541
Loc: Costock, South Nottinghamshire...
If you were to find one of the rare ones where the gauges don't mist up and it doesn't let any water in when in heavy rain then you must have the Morgan equivalent of a Friday afternoon car. Some of the better dealers will manage this under warranty for you.
Costock, UK
2014 4/4 Rolls Royce Garnet Red
Disco 4
Teddy - 17h1 Irish Draught cross

#472015 - 11/09/17 04:25 PM Re: Misting Gauge [Re: Paul F]
Ian Wegg Offline

Talk Morgan Enthusiast

Registered: 05/03/10
Posts: 1881
Loc: Petersfield, Hampshire, UK
Originally Posted By Paul F
If you were to find one of the rare ones where the gauges don't mist up and it doesn't let any water in when in heavy rain then you must have the Morgan equivalent of a Friday afternoon car.


In my 10 years of ownership the gauges of my 1980 model have never misted up. I don't often have the roof on but we drove back from Goodwood on Saturday through some very heavy downpours and we suffered no water ingress.

Don't bother making me offers, I'm never selling!

1980 Royal Ivory 4/4 4-seater. B4771

#472022 - 11/09/17 05:01 PM Re: Misting Gauge [Re: Nick Burns]
Robbie Offline

Talk Morgan Expert

Registered: 08/01/07
Posts: 2465
Loc: Co Wexford, Ireland
At the risk of seeming a fraud, my2009 is totally waterproof after the installation of various bits of neoprene and draught excluder!!!

However the instruments do mist up!!!
Plus4 AM Mendip Blue
09-WX-2269 -- SSL RS & 5L

"Fettlebodge"-- chief of the PaddyMogs

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