engine trouble, fuel light on but tank is over half full

[justy31]

Just got my 2005 Air Nautique 226TE 50 hour service from a shop I normally don't take it to but they work on all models, launched for a test run andand am now having engine trouble. The boat idles fine but as soon as it is put under load (going to plane or towing boarders), it bogs and I have to let off the throttle. I just installed 2 new site 27 batteries (old ones were 24), and a fresh air exhaust system. I thought maybe the motor had to calibrate so after a few laps, it seemed to not be as bad, although I still notice a significant loss in performance, barely pulls a small wake boarder up. After about 2 hours on ad off cruising, the "low fuel" light stated blinking and the gauge reads zero. There is over half a tan of gas. not sure where to start. thanks for any suggestions.

[vacooley]

Check fuel filter first.


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[wakejunky]

Fuel, spark and air....Fuel is probably easiest to check, make sure filter is clean, check cap and rotor and then check spark.

[vacooley]

Make sure the FAE is not blocking exhaust in some way. The symptoms you describe can also be caused by restriction in exhaust.


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[justy31]

Update: Took the boat out, seems to run ok, still a little hesitant but continuously gives the low fuel warning on the digital gauge and the needle gauge. While running, the gauges then intermittently worked a few times (5-10 random times during the course of the day). interesting is the "Hours left" read out then started to decrease over about a minute until the low fuel warning came back on. I am thinking of replacing the in line filter as well as the low pressure fuel pump. Any comments/suggestions? Thank you.

[kmarine]

you have corrosion on your fuel tank sending unit wire. clean contacts and you shoud be good. Otherwise you may need a sending unit. The gauge works on resistance. if replacing the sending unit it works better if the tank is not full.

[justy31]

would that explain the hesitation/running intermittent running issues as well?

[kmarine]

Did you replace your fuel filter yet? I replace mine every year dirt and water in fuel cause intermittent performance issues. especially if you purchase fuel with ethanol.