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Jun 14th, 2026
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Joined: Dec 2013
Posts: 44
Just Getting Started
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Just Getting Started
Joined: Dec 2013
Posts: 44 |
...but on p 11 of the manual(version 2)we are told NEVER to run the vehicle dry....could cause damage to engine etc.
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Joined: Aug 2017
Posts: 159
L - Learner Plates On
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L - Learner Plates On
Joined: Aug 2017
Posts: 159 |
Indeed. I should have added that he said the reason the gauge shows 100% for quite a while and then drops suddenly is that there is a "reserve before it gets to 100%"! I don't think he sounded Irish.
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Joined: May 2015
Posts: 1,815 Likes: 32
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: May 2015
Posts: 1,815 Likes: 32 |
...One of its electrical boffins told me:
1. That this is a problem more prevalent in 2011-14 M3Ws. Since then, an improved sender has been fitted. He claimed that the older ones will show zero when there is about a third of a tank left; the newer ones when there are c.two gallons left.
2. That fitting a longer sender is unlikely to help by itself as the fuel gauge is calibrated to the factory-fitted device.
... These are contradictory statements. If the gauge has been calibrated there wouldn't be a problem!
M3W5sp 2015, MSCC, MTWC, Oxon UK
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Joined: Jun 2016
Posts: 439 Likes: 3
Learner Plates Off!
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Learner Plates Off!
Joined: Jun 2016
Posts: 439 Likes: 3 |
...but on p 11 of the manual(version 2)we are told NEVER to run the vehicle dry....could cause damage to engine etc. I read this also, and was baffled. What damage could possibly occur to a petrol engine from running out of petrol? No different from driving down a hill in gear while off the throttle it would seem.
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Joined: Jan 2014
Posts: 1,075
Has a lot to Say!
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Has a lot to Say!
Joined: Jan 2014
Posts: 1,075 |
...but on p 11 of the manual(version 2)we are told NEVER to run the vehicle dry....could cause damage to engine etc. I read this also, and was baffled. What damage could possibly occur to a petrol engine from running out of petrol? No different from driving down a hill in gear while off the throttle it would seem. Internal fuel pumps are cooled by the gas/petrol around them. Running dry "could" overheat the pump and that could cause a big problem. The issue is that they don't want you to run out of fuel, but turds occur sometimes and it just happens. Manufacturers have to know that on occasion people don't pay attention and do run out of fuel. I just don't think you would want to make a habit of running empty very often.
Dan
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Joined: May 2012
Posts: 1,796 Likes: 5
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: May 2012
Posts: 1,796 Likes: 5 |
Sack the fuel gauge, zero the trip when you fill up and fill up again at 200 miles or 250 at a push.
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Joined: Jul 2013
Posts: 3,732 Likes: 79
Talk Morgan Addict
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Talk Morgan Addict
Joined: Jul 2013
Posts: 3,732 Likes: 79 |
Red Leader 
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Joined: Mar 2014
Posts: 1,737 Likes: 55
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Mar 2014
Posts: 1,737 Likes: 55 |
I have just spoken to Morgan about the problem. One of its electrical boffins told me:
1. That this is a problem more prevalent in 2011-14 M3Ws. Since then, an improved sender has been fitted. He claimed that the older ones will show zero when there is about a third of a tank left; the newer ones when there are c.two gallons left.
2. That fitting a longer sender is unlikely to help by itself as the fuel gauge is calibrated to the factory-fitted device.
Firstly, many apologies for resurrecting this thread!  I’m just wondering whether any folks with a newer M3W (2015 onwards) can confirm that their fuel gauge does indeed read ‘0’ at around 200 miles. If so, what is the part number of the fuel sender used? Or, maybe it's the same sender and the difference is that since 2014 they have been factory calibrated?
Andy
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Joined: May 2011
Posts: 1,625 Likes: 25
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: May 2011
Posts: 1,625 Likes: 25 |
I can't explain this but I have noticed when doing long trips, Switzerland New Zealand etc, driving approximately 150 miles plus each day and filling up every day, then after about a week the fuel gauge becomes more accurate. In New Zealand on the long days I was getting 200 miles before seeing zero on the gauge.
Once back home to once a week driving it reverts to its usual random self, I have the 280mm sender.
2021 M3W
2013 M3W - Sold
1971 4/4 2 Seater
1934 Sports
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Joined: Feb 2019
Posts: 1,889 Likes: 16
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Feb 2019
Posts: 1,889 Likes: 16 |
Sack the fuel gauge, zero the trip when you fill up and fill up again at 200 miles or 250 at a push. I always hate comparing gas mileage…. but I seem to be getting about 24 MPG (mostly around town). In a few weeks I will be on a trip, but we will be going 75+ so I will see. Usually I am putting in about 4-5 gallons.... but yes, like my MC's I always zero the trip guage
Rodger
2018 M3W "Dreamers on the Rise"
2004 Plus 8 (wife's)
old Goldwings and a couple of Harleys
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