Not withstanding all the good advice about this type of gauge being less than ideal, I would like it to at least work when stationary so I need some more advice please.
I removed the sender unit and moved the float up and down by hand and discovered that when the float is at it's lowest (i.e. when you would expect it to read empty), the gauge reads 7/8, when at its highest (i.e. when you would expect it to read full), the gauge reads 1/4. Looking at the gauge manufacturers website (Wema), it suggests that if you have a US spec gauge and a European spec sender or the other way around, then this could result in reading high and low the wrong way around. Extract from the Wema Q&A....
Q: Why is the level gauge reading backwards (reading full when tank should be empty, reading empty when tank should be full)?
- That means the gauge and the sending unit are using different standards (one may be using American standard, 240 ohm at empty, 30 ohms at full; the other may be using European standard, 0 ohms empty, 180 ohms at full), hence, are not compatible.
- Only solution would be to replace either the gauge or the sending unit so that both are using either European Standard or American Standard ohm range.
Has anyone come across tis before? I am told that the previous owner of my rib had only replaced the gauge a few months ago. Is just seems a bit unlikely that a locally sourced Wema gauge would have been US spec (I am assuming the Ribcraft sender is European spec?). Could this be a wiring issue? Thanks for any suggestions.