1 reply to this topic

[johntannehill]

Hi forum new to the site and needed some help with the diagnosing and the fix for a fuel gauge that's not working on my seadoo. I've read that you can check if the gauge itself is bad by jumping the connector with a wire to see if the needle goes to full but my connector is a three wire and I'm not sure which two to connect. Any help would be great. I think that I understand how to repair the sending unit based on the YouTube video and will try that if the gauge is functioning. I've already checked that the oil warning light works but still no luck on the fuel gauge. I also have no joy with the speedometer but will disconnect at the coupler to see if my meter gets a reading when the wheel is being rotated. Help in that area would be also appreciated. Overall the seadoo is in pretty good shape but these two things are bothering me and I want to repair them myself if I can. Thanks in advance for your help.

[BigWayne]

Welcome John,

Can you provide some detail on which seadoo craft you're referring to? From the detail you've provided in your initial post, I'm assuming you're referring to the three position senders used on the late 90s two stoke boats that have the surface mount fuse placed internally within the sender.

Those fuel senders vary a bit depending on the craft and year. I may be able to provide better guidance if I know your exact model and year.

If I remember correctly, you can test the MPEM by shorting either outter wire to the middle wire. Shorting one set of wires will trigger the low oil indicator, where shorting the other will show a full tank of gas.

If you're able to verify operation of both items above, then your issue is definately within the sender.

Keep in mind that a blown fuse is not the only issue seen with these senders. A missing float magnet or broken magnetic reed switches can also prevent the sender from prividing a valid fuel level.