tigerhead
Petty Officer
Posts: 232 
Sea Pro model and year: SV2100CC 2000
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Post by tigerhead on Jun 21, 2015 10:22:02 GMT -6
Hey guys,
I have a 2000 SV2100CC that has a 54 gal tank. I recently drained the tank dry and then refilled the tank with fresh fuel. Only problem is that when I was filling the tank the pump did not shut off at 54 gallons. I had the trip set on the nozzle and didn't notice the gallons had reached 64 before I shut it off. Never did trip on it's own. I don't see gas in the bilge. There is a mild gas smell, but I would expect that since I pulled the sending unit to suck out the tank. Gasket on sending unit isn't leaking. Also changed water separator/fuel filter and that got a little sloppy, so gas smell is to be expected. This is a plastic tank and the sticker is visible through the access port, definitely 54 gallon tank by the sticker. Any ideas? Am I right to think if I had a leaking tank I would see gas in the bilge at the transom? Concerned I might have a leaking vent or fill hose. Someone posted a similar question a few months ago, maybe longer, but I couldn't find the thread when I did a search. Was hoping their outcome might shed some light.
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Post by Juan on Jun 21, 2015 12:19:39 GMT -6
I recently read an article about how some shady gas stations rig their pumps to read more than you actually pumped...makes me wonder how they get away with doing that..but even if you got a false pump reading, I doubt it would be off by 10 gallons when pumping 54 and you should know it if 10 gallons were pumped or leaked into the bilge...believe me, having done just that, I know from experience. First thing I'd do is fill up a 5 gallon tank from the same pump just to see if the pump reading was right, then I'd pull the drain plug and jack up the bow and look for any fuel.. if that looks good, you might try pressurizing the tank with no more than about 3 to 5 psi to see if it leaks down.
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Post by freezerfiller on Jun 21, 2015 16:16:10 GMT -6
Maybe the tank is bigger than advertised. If it's not in the bilge, it should be in the tank.
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tigerhead
Petty Officer
Posts: 232
Sea Pro model and year: SV2100CC 2000
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Post by tigerhead on Jun 21, 2015 22:37:30 GMT -6
I guess I'm going to have to try the 5 gal gas can test because I'm convinced at this point that the tank is not leaking. I did exactly what Juan recommended. I jacked the bow up and did not get any gas to run out of the bilge. The gas odor that was there from the maintenance I did has dissipated. I removed the access cover over the sending unit and, even with the Houston heat, I'm not detecting any fresh gas vapors. The tank is definitely full to the brim. I honestly don't believe the pump is going to fail the measurement test. I think the tank just holds more than 54 gallons. I'm not sure why it would hold an extra 10 gallons, but as Freezerfiller said, it has to be in the tank if it's not in the bilge.
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yolo
Ensign
Posts: 626
Location: Back to Manasquan Inlet, NJ
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Post by yolo on Jun 21, 2015 22:59:10 GMT -6
I recently read an article about how some shady gas stations rig their pumps to read more than you actually pumped Regulated by state departments of weights and measures. They calibrate them, set them and you cannot get into the pump to change them. Our sunoco rep told me its regulated at the state level but uniform across the country. |
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yolo
Ensign
Posts: 626
Location: Back to Manasquan Inlet, NJ
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Post by yolo on Jun 22, 2015 10:08:32 GMT -6
Meant to say above that you cannot get into the box inside the pump to get to them. They put a seal on it like the meter on the electrical boxes.
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Post by baitchucker on Jul 6, 2015 12:23:48 GMT -6
If you can see the top of the tank, it should tell you the capacity. It could be different than advertised. My 190 was advertised as having a 55 gallon tank, but the numbers on top say it's a 52.
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Post by ckali7 on Jul 23, 2017 9:27:14 GMT -6
I know this is an old thread but I'm actually experiencing the same thing. Filled up a couple weeks ago from bone dry and stopped it at 67 gals. My buddy using the boat today filled it up and pumped in 73 gals at at completely different gas station. How is this even possible? I know it's a poly tank but there's no way it could stretch enough to accommodate an extra 20 gallons.....
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Post by Juan on Jul 23, 2017 13:17:54 GMT -6
I don't see a 20 gallon difference. You said you "stopped it at 67. What size is your tank? Must be at least a 73 gallon tank. You buddy must have done some serious riding to burn 67 gallons in one day.
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Post by freezerfiller on Jul 23, 2017 18:19:56 GMT -6
Sometimes previous owners will swap out the standard tank for an oversized tank so they can get more range.
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Post by AHHHH-Spray on Jul 23, 2017 19:51:34 GMT -6
Did Sea Pro build boats to order back in those days? Maybe the original owner ordered it with a larger tank. Or is it possible that they used different size tanks based on the market the boat was going to be sold in? (i.e. east coast vs. west coast vs. inland) Just throwing out some ideas. It still sounds like something's fishy with the OP's boat because the actual capacity doesn't match what's stamped on the tank. I don't know how to explain that.
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Post by gtightline on Jul 24, 2017 5:52:37 GMT -6
I'm pretty sure that they always leave room for expansion and slosh..I know I have a 55 and I am able to get close to 60 if I push it, which I don't. If it says 55 stop at 55, there is definitely a reason, and as I said, I think they leave you an extra few gallons for expansion and slosh. Especially since these tanks are made of plastic, at least mine is.
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Post by ckali7 on Jul 25, 2017 8:43:13 GMT -6
I'm wondering if the original owner ordered it with an oversized tank. There are no signs of cutting into the deck and I would see it for sure given the extent of the restore I just did on her. The boat was originally bought as a charter boat for down in Key West. Maybe it was built that way..... But she's definitely holding more than 54 gallons.
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