Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing Fuel Guage reading Full

Well I have to say, like others, that my gauge seems to be fairly accurate. When I have managed to brim the tank (though that's another story altogether ) the gauge reads full and drops gradually as you'd expect. I tend to run it between 1/4 and 3/4 full though as trying to fill the tank results in a significant drop in the mpg due the "burp" of fuel that ends up all over the rear panel... and yes I do try to fill it carefully... and yes I know "It's a Morgan Sir... they all do that!"

Surely it should be covered under warranty?

I was strongly advised when I bought mine and been told from other sources that you shouldn't fill up anymore once you get the first click shutting of the nozzle. Something to do with causing extra petrol fumes by filling further up the pipe but perhaps others can comment better on this if it's true and the reason not to overfill?

I was strongly advised when I bought mine and been told from other sources that you shouldn't fill up anymore once you get the first click shutting of the nozzle. Something to do with causing extra petrol fumes by filling further up the pipe but perhaps others can comment better on this if it's true and the reason not to overfill? [/quote]

The first click I get is when I pull the trigger........probably clicks 15-20 times during a fill up

As with Roger I was so advised; it applies to all cars with the full fuel vapour recovery systems. The explanation was that if you brim the tank then neat fuel, not vapour, gets into the charcoal can and this causes the MIL Light to go on. Worst case is a new can, about £120.

The first click I get is when I pull the trigger........probably clicks 15-20 times during a fill up [/quote]

I think there has been a thread on this before about the slow filling experienced on some cars.

Yes I was told this as well, but my problem is more like Burgundymog has said, in that unless I fill at snails pace the nozzle repeatedly clicks off.
Having done a bit of I've found that the problem lies with the breather tube. It has been rather lazily fitted and the pipe is too long. So, instead of it running in a straight and gradual incline it forms a barometric loop, which fills with fuel if I try topping up at anything like a reasonable pace, thus preventing it breathing air out of the top of the tank effectively. Filling the tank very slowly compensates for the lack of breather but, quite often though not every time, when the tank is close to full and when the nozzle clicks off all appears to be fine, until that is I remove the nozzle. At this point quite a large amount of fuel "burps" back out of the filler neck and runs down the back panel... very annoying

Theoretically the solution is simple... take the jubilee clip off the vent pipe at the top of the tank, shorten the breather pipe until the pipe has a continuous gradual incline back to the filler pipe and refit the breather. However, access to it is a right PITA and as my car is a 2005 the fuel pipe and breather tube has gone quite hard. So the chances are it may not come off the tank, or straighten, without terminal damage. I'll just have to live with it and at the "burps".

All part of the Morgan "charm" sir!

My '76 gauge was pretty accurate. The '93 one isn't - never reads above 3/4... In both cases I used to reset the trip at every fill...

Having a working fuel gauge is a bit of a bonus after having propane gauges. They don't really work, just wave at you for most the tank, and drop to empty about the time you run out. I have never relied on the gauge and use the tripometer at each fill up. On my converted cars, they are full until they are not, then I fill up. 250 Miles or so. Getting 22-25 MPG on the Plus 8. Very happy with that.
Cheers,