Oil tank leaking - Chicago Illinois Fishing Forum, Information & Reports
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Old 10-09-2015, 01:14 PM   #1 (permalink)
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Default Oil tank leaking

I am hoping someone has a suggestion. I have an issue where I am not able to properly tighten my oil cap because the threads are damaged. My boat is 10 years old and I'm very careful about how I do things. I have no idea how this could have happened. Looking online it appears I have to replace bother the tank and the oil pump, but that looks to be like $900.00 plus. There has to be something else I can do. I attached a pic of what it looks like. I'm open to any ideas.
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Old 10-09-2015, 03:00 PM   #2 (permalink)
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Stick a cork in it. Seriously! Something of that nature might work.
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Old 10-09-2015, 03:47 PM   #3 (permalink)
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I am thinking something like that. Cork, rubber stopper, gorilla tape, etc....
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Old 10-09-2015, 06:27 PM   #4 (permalink)
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Is that a Yamaha or Evinrude?
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Old 10-10-2015, 02:38 AM   #5 (permalink)
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Whats broken??? The cap itself or just the threads??? If the threads are bad, try a wrap or two of some twine and a smear of shoe goo or petroleum resistant caulk... Just enough to coat the twine... Don't gob it on...
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Old 10-10-2015, 11:08 AM   #6 (permalink)
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I have an 2006 Evinrude E-Tec 90hp. E90DPLSDA is the model number. I've looked for just the oil tank but like I said, it looks like you can't just replace that without the oil pump. There is no pressure so I'm going to try just plugging it to see if that works.
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Old 10-10-2015, 11:10 AM   #7 (permalink)
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It's the threads themselves. Not the cap.

Thank you all for your help
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Old 10-13-2015, 09:29 AM   #8 (permalink)
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You could try Teflon tape , works on pipe threads .
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Old 10-13-2015, 10:31 AM   #9 (permalink)
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I would try the really wide (like 2 inch Teflon tape first. If that doesn't work a thin coat of liquid teflon (available at a hardware store for 3-5 dollars) around the threads in a very thin layer. However I have a tough time believing you cannot purchase the reservoir itself. Keep making phone calls and shooting emails. Starting with the marina that originally sold the motor and I'm sure you'll find an outlet to purchase just the part you need. Outboard engine manufacturers don't want a reputation for having leaky oil reservoirs so somebody from evinrude should fix ya up.
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Old 10-14-2015, 12:42 AM   #10 (permalink)
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boats.net has the tank listed at $72.80 and the cap assembly at $14.05. It says the oil tank AND pump assembly is obsolete. Seems like a quick fix ?
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