fuel gauge bad reading

[dompate]

Hello, i own a 210 2010 with the central screen dash display, the fuel gauge never show the real level , always go up and down. I change the fuel sending units and its still the same !! did someone know what could be the problem ?? bad wire ? ECM ?
Thank

[kmarine]

Most likely a bad connector on back of fuel gauge or sending unit. Did you clean the wire connector when replacing the sending unit. after getting things working again a little shot of spray paint can be used to seal out moisture.

[dompate]

no i dont , the connector looks good but i will double check ! thank