Originally Posted by MercFan

... that could be it - it was the fix in my case... my fuel gauge was working ok until it got down to about 1/4 tank and then it would 'bounce around' uncontrollably... after removal, disassembly and cleaning it's working fine now. Check out the clarity of the fuel in the tank while you're at it - remove a small portion of the fuel into a clear plastic bottle - mine was black... and so another project began...