Fuel Gauge on 1995 3200 SCR

[K&T3200]

Any tips on replacing the fuel gauge? It will read 1/2 full when tank is filled to the brim but usually reads empty. It has been like this for the 4 years I've owned the boat. I'm planning to sell her soon and thought having a fuel gauge in working order would be a good idea.
Any advice? Thanks in advance!

[mmwjr]

It’s probably the sender in the gas tank. Remove the sender wire and the gauge should read empty then ground the sender wire and it should read full. If it passes both these test the gauge is good and the sender is bad.

[K&T3200]

Hi Mike and anyone with experience replacing a fuel sender,

Have you replaced a fuel sender? We did the test you recommended and it passed the test showing the gauge is good.

If so, I'm having trouble finding one that is long enough...big tank...The one I"ve seen online is for 24" deep tank. I need to measure mine.

Also, it would need to be very flexible for installation due to location.

Any hints appreciated.
Kris

[K&T3200]

I just found this from 2012 on our MaxumOwners site: "Here is a link to the sending unit I installed on my boat. They are very accurate. You can get them for tanks up to 60 inches deep.
Liquid Sensors - Marine Diesel, Fuel, or Water Level Sensor"

They don't look flexible at all so how is it installed?

[mmwjr]

Originally Posted by K&T3200

I just found this from 2012 on our MaxumOwners site: "Here is a link to the sending unit I installed on my boat. They are very accurate. You can get them for tanks up to 60 inches deep.
Liquid Sensors - Marine Diesel, Fuel, or Water Level Sensor"

They don't look flexible at all so how is it installed?

First don’t do it with a full tank, it needs to be about half full to prevent gas from spilling out when you remove the sender. There is no link in you post. Don’t think you read it correctly as 60” is 5 feet, never seen a tank anywhere close to that deep in these size boats. Typically 24” but they sell ones with adjustable arms so you can set it to match the old one.

[mmwjr]

Here is an adjustable kit but they do sell just the sender.

https://www.google.com/shopping/prod...:1,prmr:1,cs:1


Here is another option. These are nice units and come in different lengths.

https://www.google.com/shopping/prod...:1,prmr:1,cs:1

[snatra]

Did you replace the sender? How hard was it? I am buying a 95 3200 and the gauge is sticking so I'm guessing its the sender, so just wanted to see if it's an easy DIY. Also, I will prolly buy the liquid level sender above. What sender and length did you end up buying and what gasket material? Thanks.

[mrt214]

I replaced mine about 5 yrs ago and what I did is remove the table bracket from the floor and the unit was easy ti install.

[mrt214]

This is what the sender looks like on the 3200 182gal tank.
https://rochestergauges.com/product/9800-marine/

[snatra]

thanks! Now I just need to find it.

[snatra]

I figured out the ground wire screw on the sending unit broke off at the head so the ground wire is not attached. Does this wire have to be attached the ground screw on the unit or can I just attach it to the large ground bolt on the tank that is near the unit?

[K&T3200]

Hi, unfortunately I don’t have an answer for you. I sold my boat last week and just passed along the sender and gauge to the new owner.

[mrt214]

The sending unit needs to be grounded. If you can put a terminal on the unit somehow it would be better.

[snatra]

but with a steel tank, isn't it the same to ground to the tank?

[mmwjr]

Originally Posted by snatra

but with a steel tank, isn't it the same to ground to the tank?

Why would you want to put an extra hole in the fuel tank? Use one of the screws that hold the sender in the tank.

[mrt214]

The tank is aluminum. If you can attach a wire to a screw that mounts the sending unit it then as mentioned by mmwjr you have a ground.

[snatra]

ok thanks, I'll attach it to one of the mounting screws. I thought the tank was steel, but if aluminum, that's different.