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Issues with Boat hasn't been run in two plus years

Posted on 7/20/17 at 5:13 am
Posted by BullredsRus
Baton Rouge
Member since Aug 2007
754 posts
Posted on 7/20/17 at 5:13 am
I'm looking at a boat that the owner just doesn't use. It's been stored (indoors) for over two years. He says he's only used non ethanol gas and prob has close to a full tank sitting in it (60+ gallons). Should this be drained out completely and refilled? Also any other things to look closely at for a boat sitting that long.

Kept indoors at his shop and looks to be in great shape. He took it to mechanic and said it fired right up with good compression. My purchase will be contingent on a test ride. Just wondering if I should drain all that gas before the test ride. And like I said if you can recommend any other things to look for it is appreciated.
Posted by Beessnax
Member since Nov 2015
9179 posts
Posted on 7/20/17 at 5:50 am to
The seller's story sounds a little too perfect to me. Do you have any experience with boats?
Posted by DeepSouthSportsman
frick Bama
Member since Jul 2012
4635 posts
Posted on 7/20/17 at 6:51 am to
I would think the water pump would need to be replaced after sitting for two years
Posted by Redlos
Baton Rouge
Member since Jul 2005
1050 posts
Posted on 7/20/17 at 7:19 am to
2 or 4 stroke? What's the actual age and hp? Is there an oil/water separator? Need more info...

Posted by CootDisCootDat
St. Charles, The Community
Member since May 2014
1652 posts
Posted on 7/20/17 at 7:19 am to
Two year old gas? Ethanol or not, drain it out of the boat, store it in a drum, and use it here and there in a vehicle to not waste it. If it starts up fine and rides well on the test ride and you buy it, take it to a boat mechanic and have them service everything. A few hundred bucks getting it in tip top condition will save you the headache and frustration of having little things go out here and there down the line...which they will. They do on all boats. Mine was purchased brand new, will be two years old in September, and I already had to replace the on board charger.

quote:

boat sitting that long

Check the trailer tires...may be egged or cracked from non-use.

Posted by Dock Holiday
Member since Sep 2015
1640 posts
Posted on 7/20/17 at 7:31 am to
The trailer hubs will likely need to be rebuilt. After a long tow the inner seals may start to leak due to drying out, check the inside of the rims.

The hydraulic steering may need to be rebuilt, after your test run check for oil residue in the splash well, it will be a slightly yellow oil and you may not be able to see it, but can tell it’s there by the residue in the splash well.

I would not run that boat without a fuel/water separator, or any boat for that matter. Ask him if it has one and when was the last time it’s been changed.

It’s his boat for now, and it’s his choice, but you may need to add an octane boost to gas that is 2 years old. I would feel better just draining it all and running it in my lawn equipment or a gallon or two in my vehicles over time. Filling with fresh gas, run the tank nearly dry, change all filters including any on the engine and the fuel/water separator.

Entire cooling system needs to be checked, insects love to find a home there, may need a complete rebuild of the water pump.

Lower unit oil should be fine, tilt the engine all the way up and remove the bottom drain plug. Be careful as oil will try to come out, just plug it with your finger. Look at the plug for shards of metal, a very small amount is normal, but bigger pieces or an excessive amount may mean there could be lower unit issues. The plug is slightly magnetized and metal will settle there, so do this before your test run.

Posted by Geauxtiga
No man's land
Member since Jan 2008
34377 posts
Posted on 7/20/17 at 7:45 am to
If he said 2 years, it's probably closer to 4.

On the gas, it's so cheap right now I would not hesitate to drain it to avoid chance of way more expense from damage.
Posted by Wtodd
Tampa, FL
Member since Oct 2013
67497 posts
Posted on 7/20/17 at 8:18 am to
IF the story is true about the 2 years, IMO the gas will be fine if you add some STA-BIL to it. Like others have said...change the oil, the filters, probably the impeller, plugs, check all fittings and give the trailer a thorough looking over.
Posted by Geauxtiga
No man's land
Member since Jan 2008
34377 posts
Posted on 7/20/17 at 11:16 am to
quote:

It is a 250 HP Yamaha with 55 hours.
55'hrs is nothing. Someone asked if it was a 2 or 4 stroke, which is it?

quote:

He is going to bring it to an engine place to get them to run that same test and give the printout with the hours and compression and all that stuff. We have agreed on a price but he say that we could renegotiate if something big is noticed on test drive (or in engine reprt).
Sounds like he's honest but con artists do, too. I'm probably being on the overly cautious side here but Inwould feel more comfortable bringing it to get this done by my guy.

If it's your first boat and you don't have or know a mechanic, maybe bring it to one recommended by a friend you trust who would have no dog in this hunt. Not sure what a mechanic would charge for compression test but evenif it costs you $150.00 it could save you thousands. And maybe he would split the cost or assume it if it comes back a no deal.
Posted by bamarep
Member since Nov 2013
51811 posts
Posted on 7/20/17 at 2:49 pm to
A guy I recently bought a used boat from told me a similar story

Said it had 35 gal of non ethanol fuel in it. I took him at his word. I eliminated the oil injection and when I added more gas/oil to account for the elimination of the oil injection what I had was a gas that was

a) mixed at nearly twice the ratio it was supposed to be because it didn't have near the gas in it he said it did, and

b) gas that had a shite load of water in it because what little was in it had water in it

Needless to say I got to pump ask that shite out and clean the carbs. I'll never take a guy at his word like that again without hearing it run.
This post was edited on 7/20/17 at 2:51 pm
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