Attempted to go out yesterday only to find gas in the bilge after getting underway. Flushed the bilge with sea water and headed back to the hill. Noticed an increased amount of gas in bilge when running hard and very little when idling. We have a 2000 Scout 172 CC with 100 HP Yammi. It has a 34 gallon plastic tank so a leak in the tank is unlikely. Where would be a good place to look for the leak and could I repair it myself? I couple of suggestions have been the sending unit or the suction line. There is NO case gas in the battery compartment where the Gas/water filter is located. I pumped 18 gallons of gas of the boat yesterday so she is about empty as I do not keep it full any longer. If this repair is not for DIY’er, any suggestions of a good, honest repair facility that won’t take two weeks just to look at it? Thank in advance, Mike.
Not trying to be an arsehole here, but did you by chance fill up one of your rod holders with gas instead of the tank? Happens more than you would think.
That has been suggested but is not the cause. My gas fill has a complicated cap to take off and the difference is very noticeble between it and a rod holder. As I keep the bilge hole unsealed except for just before launching, this mistake would have been noticed immediately.
quote:
Originally posted by Half-hitchedNot trying to be an arsehole here, but did you by chance fill up one of your rod holders with gas instead of the tank? Happens more than you would think.
Check the fuel filter cartridge. Had the same thing happen and it turned out to be the problem. It had worked loose over time. 3/4 turn and all was well.Sometimes they will rust through. Fire on the watwer is abad thing- be careful.
If you are talking about the fuel/water separator, that is fine. It is located in the same compartment as the battery (bad design) and it is good. No leaking gas. If there is another filter I need to look for, please elaborate. I will be going under the console tonight to remove access door to fuel tank and scope out a couple of suggestions. Thanks,
quote:
Originally posted by RLSCheck the fuel filter cartridge. Had the same thing happen and it turned out to be the problem. It had worked loose over time. 3/4 turn and all was well.Sometimes they will rust through. Fire on the watwer is abad thing- be careful.
we see the gasket for the fuel sender in the top of tank leak
the boat underway causes the gas to slosh around
the fuel line from the tank to the motor could also be an issue
are you sure its a plastic tank??
the reason I question, most scouts came with an aluminum tank
Chris, Thanks for joining in. I was told by Scout today (6/21) that the 2000 Scout 172 Millenium Edition CC has a 34 gallon plastic tank. I will verify tomorrow. I cleaned out under the console tonight and got the round access door off from the floor (and above the sending unit) inside the console. I can see the sending unit and was told this floor panel will come off. I do not see how. The contours inside the console housing make it impossible. However, there are two small screws up from by the cooler tray almost hidden by the console housing I cannot get to. If these come out, there may be some play. I am only hoping to work the floor up the cable bundle enough to see the hose fittings, gasket, etc, etc. Any suggestions? If it is the fuel line, it is from the separator back as the battery compartment and forward are dry. Gas line passes through battery compartment into the stern of the boat in plain view and then to the motor. NO leaks at all in that section or the battery compartment. Ran out of daylight. Will resume tomorrow and will check for posts. Thank you, Mike.
quote:
Originally posted by chris Vwe see the gasket for the fuel sender in the top of tank leak
the boat underway causes the gas to slosh around
the fuel line from the tank to the motor could also be an issue
are you sure its a plastic tank??
the reason I question, most scouts came with an aluminum tankwww.teamcharlestonmarine.com
www.joinrfa.org
I had a technician at a marine electronics shop in gGreenville drill my fuel line and vent line in one installation of trolling motor control box. I thought a never would find that leak. Only leaked when I filled up or stored with a full fuel system. IDIOT.
Had a similar problem with another make of boat. Turned out the bottom of the tank was cracked. A simple air pressure test verified that really quickly.
Chris, I just sent you a PM @ 7:30.
quote:
Originally posted by chris Vwe see the gasket for the fuel sender in the top of tank leak
the boat underway causes the gas to slosh around
the fuel line from the tank to the motor could also be an issue
are you sure its a plastic tank??
the reason I question, most scouts came with an aluminum tankwww.teamcharlestonmarine.com
www.joinrfa.org
Just confirmed it is an ALUMINUM tank! This could get ugly. Gasket around sender unit looks good, in place, not cracked, tight. Where to go from here?
quote:
Originally posted by chris Vwe see the gasket for the fuel sender in the top of tank leak
the boat underway causes the gas to slosh around
the fuel line from the tank to the motor could also be an issue
are you sure its a plastic tank??
the reason I question, most scouts came with an aluminum tankwww.teamcharlestonmarine.com
www.joinrfa.org
Not to derail your train of thought, keep up with what Chris is telling you.
My thoughts are when you are running hard is when the gas flows, when you idle is slows down or stops.
When you are running on plane the gas should be pushing to the aft section of the tank and possibly raising the level check the aft section and aft top section. Maybe try a pressure test.
PMS
Scout 172
Yamaha 115
Pressure test most definitely is next. I have procured a few numbers of mobile mechanics and need to call them. I have removed the console from the deck (actually pretty easy) so access to tank and hoses is unlimited. I ran out of light last night but there are NO apparant leaks or cracks in the hoses. It is all leaning toward a crack in the tank. Your synopsis is spot-on. Thank you.
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Originally posted by FireMedic124Not to derail your train of thought, keep up with what Chris is telling you.
My thoughts are when you are running hard is when the gas flows, when you idle is slows down or stops.When you are running on plane the gas should be pushing to the aft section of the tank and possibly raising the level check the aft section and aft top section. Maybe try a pressure test.
PMS
Scout 172
Yamaha 115
UPDATE!! Hole has been found and it is on TOP of the tank under the sprayed in foam insulation. It appears that the insulation had absorbed moisture and saltwater particles and has eaten two pinholes into the top of the tank. NOW, can the tank be removed without disconnecting everything in the console? Are replacement tanks available? Any and all advice appreciated. Still DIY as everybody is slammed!
I am going to patch the pinholes with JBWELD and give it go. $15 VS $$$$. You never know.
quote:
Originally posted by FireMedic124Not to derail your train of thought, keep up with what Chris is telling you.
My thoughts are when you are running hard is when the gas flows, when you idle is slows down or stops.When you are running on plane the gas should be pushing to the aft section of the tank and possibly raising the level check the aft section and aft top section. Maybe try a pressure test.
PMS
Scout 172
Yamaha 115
call the Scout factory
quote:$15 patch might work if it does you are happy. It it does not work KABOOM. Personally I would use a portable tank like a 6 gallon until I could afford the time to get it fixed properly. Floating bombs are zero fun especially if families are involved.
Originally posted by redfish4sureI am going to patch the pinholes with JBWELD and give it go. $15 VS $$$$. You never know.
quote:
Originally posted by FireMedic124Not to derail your train of thought, keep up with what Chris is telling you.
My thoughts are when you are running hard is when the gas flows, when you idle is slows down or stops.When you are running on plane the gas should be pushing to the aft section of the tank and possibly raising the level check the aft section and aft top section. Maybe try a pressure test.
PMS
Scout 172
Yamaha 115
I have been in contact with James Lawton of Scout and he has been very helpful.
quote:
Originally posted by dernflatlandercall the Scout factory
The fix will be thoroughly tested on land and then in the water by me alone. We did not go KABOOM when leak first happened (Thank GOD) and doubt it will happen now that we are aware of the leak. The two pinholes are the problem and JBWELD should work. If not, total replacement is the next step. You are correct, sir, SAFETY is first!
quote:
Originally posted by CharlesHHBC[quote]Originally posted by redfish4sure
I am going to patch the pinholes with JBWELD and give it go. $15 VS $$$$. You never know$15 patch might work if it does you are happy. It it does not work KABOOM. Personally I would use a portable tank like a 6 gallon until I could afford the time to get it fixed properly. Floating bombs are zero fun especially if families are involved.
www.HiltonHeadBoatingCenter.com
If you have two pin holes, you likely have quite a few more pits working no becoming pin holes. Gasoline vapors in an enclosed space can get rather exciting rather quickly. If it were my boat, I would not use it until I was able to replace that tank… not even with a portable tank. You cannot get the built-in tank completely clean and safe, in my opinion.
17’ Henry O Hornet
26’ Palmer Scott