sunk 78 Evinrude 70 hp

[gumperson]

All mechanical components seem to be running fine.
We dismantled all electrical components and cleaned, the starter worked initially and now no longer works. Also no spark at any cylinder. Relay clicks.
Do you have any suggestions on how to fix electrical parts that have been submerged in salt water for a day and a half other than rinsing with fresh water, cleaning with electrical parts cleaner and oiling? Thanks for the help, we need it!!

 

[fireman57]

Re: sunk 78 Evinrude 70 hp

You may be able to ohm them out using the stats in an OEM manual to determine if they are good or bad. Otherwise it looks like a lot of replacement parts. The starter can be rebuilt by any shop that does them. Make sure they know that it is a marine starter.Did you pull the flywheel and rinse everything and dry it good? Did you pull the plugs and crank it over for a long period of time and fill with a lubricant to make sure that all the water was out of your cylinders?

 

[tashasdaddy]

Re: sunk 78 Evinrude 70 hp

unfortunately, a day and 1/2 in salt water, you probably wasted you time pulling it up. fresh water is bad enough for a quick dunk. but 1 1/2 days in salt is bad.

 

[AlanR]

Re: sunk 78 Evinrude 70 hp

Shoulda untached it from the boat and left it at the bottom. All the wiring is prob coroded and Just screwed. I hope you can get it to work again but i think its pretty screwed.

 

[gumperson]

Re: sunk 78 Evinrude 70 hp

I wanted to do that when it was still running!!! We realize it's screwed, any suggestions on how to get it working, now that we have established I'm nearly screwed!

 

[xtraham]

Re: sunk 78 Evinrude 70 hp

Shoulda untached it from the boat and left it at the bottom. All the wiring is prob coroded and Just screwed. I hope you can get it to work again but i think its pretty screwed.

what did you do to get your engines running Alan? as I recall you lost how many overboard?

 

[xtraham]

Re: sunk 78 Evinrude 70 hp

gump, please give details,
did you get it to start?
did you disconnect ALL connections and clean them?
did you drain the carbs?


what has been done so far and what is happening will give the experts here a better chance of getting you up and running again, there are alot of very good tech's here that are going to give you good advise, but need every detail you can provide.......good luck

 

[ezeke]

Re: sunk 78 Evinrude 70 hp

The whole lower unit and mid-section should be in good shape. Take care of them - they will sell easily in the spring.

 

[gumperson]

Re: sunk 78 Evinrude 70 hp

gump, please give details,
did you get it to start?
did you disconnect ALL connections and clean them?
did you drain the carbs?


We did disconnect all connections and clean them. We flushed the cylinders with fresh water, then methyl hydrate, then fluid film and mixed gas blowing it through with air and then turn over. The engine never started but we initially had a very faint yellow spark and then no spark. We drained the water and cleaned the starter and relay inside and out and they initially worked and now have stopped too. We ran a jumper cable directly to the positive terminal on the battery to the starter and it still didn't spin. We drained the carbs and cleaned them. flushed the gas lines. cleaned the ignition/throttle box. We have tried removing the flywheel but cannot seem to remove it, so we sprayed and oiled underneath as much as we could. The relay now makes a click, click, click sound. without the relay hooked up the wire from the ignition switch to the relay reads 12 v when the key turns to start. With the relay hooked up it reads about 7v. Is that normal? That's all I can tell yah. Thanks for the help to you all.

 

[xtraham]

Re: sunk 78 Evinrude 70 hp

are you working with a new battery? you should be getting a voltage reading of at least 11v while cranking,you can use jumper cables straight from a battery + and - with the control harness (big plug on left side of engine) un-plugged and check for spark if the engine runs with the plug disconnected you will have to choke it off

 

[F_R]

Re: sunk 78 Evinrude 70 hp

You haven't had it running yet? Unless you are prayed up and very lucky, you don't have a motor anymore. Those bearings in the powerhead may turn, but they are most likely etched and will fail in the future. Maybe you got all the water out, but that's a big maybe.

 

[AlanR]

Re: sunk 78 Evinrude 70 hp

Shoulda untached it from the boat and left it at the bottom. All the wiring is prob coroded and Just screwed. I hope you can get it to work again but i think its pretty screwed.

what did you do to get your engines running Alan? as I recall you lost how many overboard?

Sorry for the slow response. Yeh i think ive lost / Sunk the most outboards on this forum. If there a decent motor like my GT 150 or my Yamaha 30 Ill go diving for em bring em up, Clean the carbs take the plugs out and drain all the water out of everything but all my motors are only under for bout an hour tops and its fresh water. If there a useless boat ancor like my Chrysler 105 It stays at the bottom of the lake. If some one wants a free chrysler 105 its still at the bottom of the lake infront of my cottage O theres a old 55 and some other crap 2 Lol. But since it was over a day and salt water his motor is prob screwed.