Had a similar issue after making sure the gauge was working correctly and the wires were cleaned and secure I bit the bullet and replaced the sending unit
Problem solved
Does anyone know if there are any screens (other than the spin on filter)in the EFI fuel system on the 8.1 MERCRUISER Horizon
We are experiencing a restriction similar to a pick up tube tube clogging .however there is no screen or siphon valve at the fuel tank pick up tubes on Sea Rays in2002...
2 nd request
Need help - does anyone know on a 340 Sundancer/Amberjack
If there are any SCREENS at the fuel solenoids or INLINE on 8.1 L
Horizons EFI … thanks