C43 Fuel gauge

[996jimbo]

My C43 fuel gauge (presumably like all the other W202's) reads a nice healthy full for quite a while before plummeting ever faster towards empty.

I understand why this is but wondered, as it is an electronic signal, if anyone has ever come up with a corrector / compensator so that the fuel gauge shows a true reading?

EDIT: should be clear here - there is no fault with leaking fuel, it is that the gauge shows full for miles then 3/4 when it's actually about 1/2 and so on.

 

[Alps]

they are all like that, basically when you fill up to the top you have filled past the max on the feul gauge, therefore until it reaches the max point again it will not show a reading that it is dropping.

hope that made sense.

 

[996jimbo]

Yes makes sense. I was just wondering if anyone had ever invented a something-or-other that corrects the reading. It's not only that it stays at full but also that progress down the gauge speeds up as it moves down the gauge

Presumably this is because the float on the sender is on an arm which therefore describes an arc as it falls (and hence greater movement for less vertical movement as the fuel level drops) rather than linear up/down progress (if that makes sense).

 

[Shude]

If you've seen the shape of the tank you'd understand the problems getting an accurate measure off it!

Mine does 70-100 miles before hitting the "full" mark, then I aim to do about 200-250 by the halfway mark and somewhere around the 350-400 mark by the bottom of the gauge.

 

[gina2201]

I must say I am quite impressed with the fuel economy on my new car, I actually thought the fuel guage had got stuck at "half" as it was sat there for 2 days - but it has slowly started to drop now, it is much better than my last Mercedes (and the vitara)!