Boats For Sale:
Fuel tank removal '95 SN |
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LooseScrew22 
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Joined: August-05-2022 Location: Oregon Status: Offline Points: 47 |
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 Topic: Fuel tank removal '95 SNPosted: April-29-2023 at 12:23pm |
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She's all back together- time to hit the lake and make sure everything works!
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2840 |
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Posted: April-28-2023 at 12:14pm |
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Nice work. Hopefully you won't have to go through that again. I really like the concept in the new SN with the center fuel tank. Too bad these older boats have the rear tanks and all the "fun" that comes with them.
JQ
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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LooseScrew22
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Posted: April-28-2023 at 11:53am |
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tank is now back in the boat
 and i hope i never have to do this job again! i still have to tighten all the bolts to final specs.  turns out my fuel line clips hold the hose too high on the wall to clear the bolts for the tank straps. Had to drop the shower hose and shift the lines to the bottom two clips. |
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LooseScrew22
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Posted: April-27-2023 at 4:12pm |
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Got the new plate and gaskets finished and installed on the tank. I think its ready to install back in the stern now
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MrMcD
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Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3590 |
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Posted: April-21-2023 at 1:47am |
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You are making progress quickly, you will have a reliable boat this year and just in time for the season.
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2840 |
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Posted: April-20-2023 at 1:33pm |
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Very nice work. You'll be happy with your efforts once it's back in the water.
JQ
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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LooseScrew22
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Posted: April-20-2023 at 12:14pm |
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Update-
Replaced all the fuel lines to the engine from the gas tank. I 3d printed a replacement fuel line clip  and installed them in place of the factory zipties (the grey hose is for the shower).  Redid the rudder packing and added a zerk fitting with grease hose extender  I am planning to head to the lake to see if there are any leaks from the rudder/driveshaft before putting the gas tank |
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LooseScrew22
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Posted: April-11-2023 at 12:38am |
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i assume it is due to the corrosion in the plates and gaskets. I am replacing all of the fuel lines and i am having a custom fuel pickup plate and gasket made as these are not available. i also ordered a new fuel sender unit. once this is all back in place, i cannot think of a reason why the boat should have a gas smell...only time will tell.
PM me if you want the dxf files (drawings) for the plate/gasket. If you are interested in purchasing, i can ask the fabricator if he would want to make additional sets |
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tnplicky
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Joined: December-22-2006 Location: C'trl Illinois Status: Offline Points: 333 |
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Posted: April-10-2023 at 7:20pm |
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I am very interested in your project. I have been thinking about doing the same (also '95 SN) but have not pulled the trigger yet. Have you been able to identify the source of the fuel "leak"/smell?
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LooseScrew22
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Posted: April-10-2023 at 11:22am |
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So having talked to another member with the same tank, sounds like no need for the foam. I found my top plate to be more corroded than i expected (see picture). I contemplate JB weld, but the more i think about it, the more i think it makes sense to have a new plate fabbed and use a standard rigid plastic pickup tube.
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LooseScrew22
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Posted: April-08-2023 at 10:05pm |
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Updates: i don't have a lot of pictures, but here's the deal. I was able to remove the tank
After looking at the gasket and underside of the fuel sender (corroded) i ordered a new one from nautiqueparts.com. I am also replacing the all the fuel lines from the tank to the engine (reusing the vent hose) and new fuel-water seperator filter (i have the sierra 18-7845) and i sandblasted and repainted the fuel-water filter housing. The gasket for the fuel pickup is okay on one side, but nasty on the side where it was in contact with the aluminum. The ground wire nearly corroded all the way through the aluminum plate.  I have created a template in fusion360 for a replacement gasket and if i can find a replacement material, i will laser-cut a new gasket. I have to also clean off the underside of the fuel pickup plate. I do have the black donut in the bottom of the tank... it came out in 1 piece and doesn't appear too crumbly but i am not sure i want to put it back in. I plan to call correctcraft to see if they have any recommendation to deal with the foam thingy. I will try to get more pictures soon.
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LooseScrew22
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Posted: April-03-2023 at 12:32am |
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It looks like its in decent shape, I'll check it and see, if its bad, i'll scan it in and see if a buddy can laser cut me a new one. Otherwise permatex it will be. i checked the tank, i have a black foam gasket at the bottom... it appears it might be in 1 piece although it is shifted... i will post more info. I was able to get the fuel fill hose off as well... more to come
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MrMcD
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Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3590 |
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Posted: April-02-2023 at 7:34pm |
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The Old MG cars have a fuel sender that mounts from the bottom of the tank. British Idea. The only thing that they have found to seal gasoline at the tank connection is Hyloamar. I ordered a tube off Amazon and used it to seal a gas tank on a Mercedes E350. It is good stuff and from what I read you can trust it to seal. Some motorcycle tanks have the same problem and those guys use Hylomar also.
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 10641 |
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Posted: April-02-2023 at 7:22pm |
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That a lot of small holes to punch in a homemade gasket.
 I wouldn't know where to look for a new one unless there's one collecting dust at a CC dealer somewhere. Since you say it's in good shape, I wouldn't be afraid to reuse it with a little of your favorite gas resistant gasket sealer on both sides if you're worried about it leaking. Something like Permatex2 or an equivalent from other companies
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LooseScrew22
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Posted: April-02-2023 at 12:04pm |
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i will work on compiling pictures of this ordeal.
gasket at the top of the suction assembly where it attaches to the tank - this is what i was looking to find. Is it available?
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KENO
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Posted: April-02-2023 at 8:40am |
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You don't have a fuel pump in the tank, are you talking about the rubber donut or the gasket at the top of the suction assembly where it attaches to the tank? How about some pictures of the tank showing all the fittings etc. to make it easier for the next guy referring to this thread, since there aren't exactly many pictures of a bare naked 95 gas tank out in the open? |
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LooseScrew22
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Posted: April-01-2023 at 9:56pm |
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so i was able to get the tank out of the stern. PITA for sure. i haven't yet been able to get the hose off the plastic tank... i ordered new hose so i may just cut it off. the primary reason was to replace the gasket around the fuel sender. however it was corroded on top and bottom so i ordered a replacement. the rubber seal around the fuel pump looks in decent shape... any know where those are for sale or will i need to make a new one?
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LooseScrew22
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Posted: April-01-2023 at 11:53am |
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Lots of good feedback- i don't believe there is much fuel in the tank since i ran it pretty low before putting into the garage... however pumping out the old gas is on the list of things to do...
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KENO
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Posted: April-01-2023 at 9:28am |
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With the mounting screws for the filler assembly loose like he has them, it's a lot easier to wrestle with the hose to get it off the tank with some twisting and lifting. You're only fighting with one end of the hose while the other end at the filler can rotate and move with the filler instead of both ends of the hose being fixed to something that doesn't move. With the hose clamps removed from the hose, you can then take the filler and hose off together pulling them up through the deck mounting hole for the filler without kinking and bending that hose and any excessive swearing And putting it back together is a lot easier too. Is your tank empty or close to it, it's hard to tell in the picture? Using a wedge under the tank on the filler side to put upward pressure on the tank, hose and filler will probably pop the filler away from the deck
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bwinn
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Posted: April-01-2023 at 8:08am |
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90 degree pick might be helpful. Carefully ease it in, maybe with some grease on it. Better if it’s not a sharp pointed one. Work it around the hose to break bond. I haven’t actually done this on your application so might not be helpful but this is what I do with hoses often.
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2840 |
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Posted: April-01-2023 at 2:50am |
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I didn’t pull the fuel filler from outside the hull. I kept that in place and focused on the hose that connects to the tank. Why do you feel that you need to pull the filler/cap assembly?
JQ
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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LooseScrew22
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Posted: March-31-2023 at 8:32pm |
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I will try the penetrating oil, but i can't even get the metal filler to seperate from the boat on the outside, i plan to run some dental floss around the lip and then i'll wrench on it and see if it loosens thanks for the info |
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Jonny Quest
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Posted: March-30-2023 at 4:12pm |
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Been there, done that. I may have used Channel-Lock pipe pliers to help "persuade" the filler hose. It finally came off. Good thing my wife didn't hear a few choice words that were employed during the extraction process... JQ
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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LooseScrew22
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Posted: March-30-2023 at 1:43pm |
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would this have been used to seal the metal filler tube to the fiberglass body from the factory?
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MourningWood
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Joined: June-13-2014 Location: NorCal Status: Offline Points: 885 |
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Posted: March-30-2023 at 1:25pm |
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Yes, so even with the fuel filler hose clamps well loosened, that hose sticks tenaciously to the filler. Spray with some penetrating oil to loosed. Twist while pulling up on filler.
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1994 Ski Nautique "Riot"
1964 Dunphy X-55 "One 'N Dun" 'I measured twice, cut three times, and it's still too short!" |
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MrMcD
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Posted: March-30-2023 at 12:35pm |
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Can’t be silicone, silicone falls apart when exposed not gas fumes. There is a product that will seal gasoline vapors. I think it is Hylomar?
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LooseScrew22
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Posted: March-30-2023 at 12:25pm |
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So i have removed the vent hose from it's fitting by the fuel filler, and have removed the fuel filler screws but it's held in place by silicone(?) and won't budge... i will try some dental floss to see if i can cut through it on the outside, but it is a royal PITA! the bilge pump discharge port is also in the way... i can see why nobody likes this job.
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MourningWood
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Posted: March-28-2023 at 2:35pm |
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Just had one out of a '94...no sump, but still a PITA, So while in there, do all you may ever want to...new hoses, etc. Secure the grab rail nuts, check wiring, esp. any grounds, etc. Rudder/steering as mentioned...
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1994 Ski Nautique "Riot"
1964 Dunphy X-55 "One 'N Dun" 'I measured twice, cut three times, and it's still too short!" |
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LooseScrew22
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Posted: March-28-2023 at 12:54pm |
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yeah once i get the tank out, i plan to repack and add a zerk- thats a great idea to add a grease extender.
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MrMcD
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Posted: March-28-2023 at 12:28pm |
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I repacked my rudder on my 1995 with the tank in place and it was no fun at all so great idea to do it while the tank is out.
I was advised at the time, 7 years ago to install a grease zerk on the steering rudder while I was in there. It was not hard, drill a hole and screw in a grease zerk, I did this but have not greased it again since. Steering is still free and light, no drag. If I had a do over I would buy one of the grease extensions that Moog sells. It is optional for the GM trucks, 2000 to 2006, they supply it for the idler arm to allow you to grease the idler arm without taking the shields off the truck to gain access. Would work well to get the rudder zerk greased without taking the rear of the boat apart. Hang in there and the boat will be ready for play soon and better than ever. Mark
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KENO wrote: