Sending Unit Gas Tank
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=3486
Printed Date: May-18-2024 at 9:15pm
Topic: Sending Unit Gas Tank
Posted By: 1998Nautique
Subject: Sending Unit Gas Tank
Date Posted: April-30-2006 at 2:29pm
| I pulled my sending unit out, and moved the float up and down. And the gas guage stayed well below the E and moved around a bit as I moved the float. I take it I will need a new sending unit. Does the unit come with the float and everything? |
Replies:
Posted By: Atmspltr
Date Posted: April-30-2006 at 3:50pm
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West Marine or Boater's World...it does not need to be a Correct Craft item. It comes with everything you'll need. Take the old one for sizing. -------------  http://i73.photobucket.com/albums/i201/Atmspltr/frontboat.jpg - 67 Mustang Resto-Mod
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Posted By: JoeinNY
Date Posted: April-30-2006 at 6:17pm
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this is probably a stupid question but did you have the sending unit grounded while you were moving the float up and down ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: 1998Nautique
Date Posted: April-30-2006 at 11:37pm
| I had both wires hooked up to the sending unit when I was moving the float. Is that the proper way? |
Posted By: JoeinNY
Date Posted: May-01-2006 at 8:23am
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If its got two wires you dont have to worry about it being grounded, a new sending unit should come with the float. I am hoping my new one arrives today from skidim, if your interested I will let you know what I think of it when it comes in. I don't have an old one to compare it to though since my boat originally came with a mechanical gauge a peep hole on the back deck to look down on it.
-Joe. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: 1998Nautique
Date Posted: May-01-2006 at 9:30am
| Sure let me know. |
Posted By: David F
Date Posted: May-01-2006 at 11:34am
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Sometimes, a bit of carb cleaner or brake cleaner sprayed liberally on the sending unit will remove the varnish and let the sending unit work again. ------------- |
Posted By: Atmspltr
Date Posted: May-01-2006 at 11:43am
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By the way, I have an original mechanical fuel gauge with indicator on the top (the one you look down thru the topside to view) from a 67 Mustang in someone needs one. It's in great shape and still works. Didn't know if you wanted to keep it original.
RB ------------- http://i73.photobucket.com/albums/i201/Atmspltr/frontboat.jpg - 67 Mustang Resto-Mod
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Posted By: 1998Nautique
Date Posted: May-01-2006 at 11:09pm
| So chances are good it is my sending unit. The dial is way below the E and twitches a bit when I move the float? |
Posted By: David F
Date Posted: May-02-2006 at 9:04am
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Yes, definately. But, try cleaning up the one you have before you replace it. ------------- |
Posted By: 1998Nautique
Date Posted: May-02-2006 at 9:07am
| I'll try it. Thank x a lot for your help. My first year with the biat so there we'll be lots of questions. |
Posted By: David F
Date Posted: May-02-2006 at 9:20am
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I gave this a bit more thought...
1. check the output of the sending unit with a multimeter (set to read resistance, ohms). 2. check the wiring connection at the guage. Sending units work on resistance. i.e. high resistance = empty indication and low resistance = full indication (or vise versa). A poor connection could be falsly providing a high resistance. But, I still think the sending unit is either varnished up or faulty. ------------- |
Posted By: tjackle
Date Posted: May-02-2006 at 9:21am
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I replaced my sending unit for about $20. Local boat store had it. Works great now. If you have to remove the gas tank (like I did) $20 is cheap enough just to replace it. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1520&sort=&pagenum=1&yrstart=1976&yrend=1980 - 78 Nautique If you're going to do it... Do it in a boat |
Posted By: tcarden
Date Posted: May-03-2006 at 10:00am
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Got to reading your post yesterday and worked on my 82SN last night. Wasn't working properly. Easy to remove, 5 - 1/4 screws and remove from tank. Inspected and found as DavidF mentioned varnish on connections inside unit. I checked it with a volt/ohm meter and wasn't getting a reading when moving float. I sanded varnish off all conduction points, i.e. the spring and where the body grounds, used some brake cleaner and generally cleaned everything up good. I also stretched the spring on the float slightly because it didn't look like it was making good contact. reinstalled and it seems to work just fine. After I fill up with gas next time I will know if it is indicating right or not. If not can you adjust the reading on the back of the gauge or somewhere else?
It was a neat little evening project. When i had it apart I showed my 12 yr. old son how it worked using the volt/ohm meter. Don't think I impressed him much but hey he's 12 right?! ------------- "Boat - A hole in the water surrounded by wood (and fiberglass) into which one pours money" |