Association Forum - Arrgh! I soaked my new 2.5 Yamaha in seawater!

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Catalina/Capri 25/250 Sailor's Forums

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Arrgh! I soaked my new 2.5 Yamaha in seawater!

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tmhansen
Captain

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USA
397 Posts

Initially Posted - 04/04/2005 : 03:04:20

We enjoyed Angel Island in San Francisco Bay so much we extended our stay there another night. By this time our supplies were beginning to run low and the holding tank to fill. My son announced he needed to use the head about 8:00 pm. He was unanimusly voted off the boat by the rest of the crew. Now the Park Service's rules state that all visitors are to be off the island by sunset. So I left the motor on the transom alone and planned to row over. In order to do that the dingy needs to be pretty solid and one tube has a slow leak. So while the dingy was side tied to the big boat and, rolling in the ferry wakes, I pumped it up hard. The excursion to the island went without a hitch and we were all able to sleep in peace knowing there still remained a little room in the tank for those middle of the night trips. The next morning I stepped out in to the cockpit and looked about, then I looked down. There was the digny tied to the side of the boat, bow and stern, with a small cable lock to make sure it did not float away. But one tube was completely deflated and the Yamaha was floating below the surface. I had left off the cap on the inflation valve! I hauled the motor up. Took it to shore and was able to use the water from a 2 1/2" hydrant they were flushing to flush it as well as I could. The crankcase looks "dry", no water. The fuel tank looks clean as well. We got home last night at 2:00 am. Put it in a tank and tried to see if it would start but no luck.
Its in the garage now on the stand. Mechanic is off Mondays. I'm sick. The motor was perfect. After sitting for 2 months I could give it one tug and it would start. I hope it can be restored. I'm sure no one else was stupid enough to leave the cap off the inflation valve but has anyone else had their motor soaked in seawater and what was the outcome?

Todd Hansen
Fiorghra'
San Luis Obispo, CA

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JimB517
Past Commodore

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USA
3285 Posts

Response Posted - 04/04/2005 : 11:52:16

The wind once blew my dinghy over and my new Mercury 3.3 was dunked for several minutes.

Remove all electrical connectors and clean with WD40 (it displaces water and conducts). Re assemble with some di-electric grease.

Remove all gas.

Drain carb, remove jets and blow out. Clean jets with B-12 Chemtool, clean entire carb, make sure ZERO water or salt residue is in there.

Remove plugs and pull starter cord until no more water comes out. Hold motor upside down while doing this. Put in a few drops of oil through the plug holes. Clean and re-gap plugs. Reinstall.

Remove fuel lines and blow out.

New fuel.

Should start up. Let it run in a tank of fresh water for a good long time.

Clean everything on the motor with a rag soaked in fresh water, or better still, use some Salt Away.

Spray motor head with WD 40 or use Boeshield or some other spray on corrosion inhibitor. Wipe down real good. Don't forget to clean all the throttle and choke components. Apply grease.

Since yours was down a long time, if the above does not work, you'll probably have to replace the coil, plug wires, and CDI. But do the above and check for a spark at the plugs.

I did all of this in the cockpit of Indiscipline and got my motor running again in a couple of hours.

I doubt there is water in the lower end oil.

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tmhansen
Captain

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USA
397 Posts

Response Posted - 04/05/2005 : 23:46:45

Thanks Jim. My wife took it to our mechanic today and found out he only does domestic motors. I am out of town and will not be able to touch it until next week. I think the ignition components got wet. I pulled the plug and no water appeared to be inside the cylinder.

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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.