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-   -   My 502 got Wet!!! (https://www.offshoreonly.com/forums/do-yourself-boating-budget/319656-my-502-got-wet.html)

VancouverMark 10-30-2014 05:42 PM

My 502 got Wet!!!
 
Well this just sucks! :hitfan:

My lift busted while I was away for the weekend and the aft of my 1998 Baja 502 EFI went under (fresh water). I guess the good part is it wasn't running and it was fresh water.

Am I looking at a total rebuild? There is no water in the Oil at all.

I haven't touched it yet, so I dont know if it will start or turnover, I wanted to get some advice before I tried to fire it up.
Cheers!

Black Baja 10-30-2014 06:10 PM

Take the plugs out and turn it over or turn it over by hand backwards a few times then start it.

vintage chromoly 10-30-2014 06:25 PM

How far under?

Sydwayz 10-30-2014 06:26 PM

How far under is the water line? My 468 got wet in my jet boat when I lost a main cooling line. Water was over the starter and the oil pan. Once dried out, I didn't even lose the starter.

NHGuy 10-30-2014 07:05 PM

WTF, lift failed, and boat leaked. You had a bad week!

Did any electronics get wet? If so you probably can't just start it.

But since the engine has no water in the crankcase you might have dodged that bullet. So remove the spark plugs and spin out any water in the combustion chambers right away. Doesn't have to turn backwards, the plugs are out. If you get water out of the spark plug holes, oil the combustion chambers and valves. Then if you can't start it you can at least preserve the engine til you can fix the electrics. That can be done by bypassing the ignition either with a remote starter button or by pulling your kill lanyard so you can crank it over without starting. The remote button is best because you won't energize the fuel injection system. After you have cranked out any water with the plugs removed, put some fog oil in the spark plug holes and thread in your old spark plugs. Crank the engine for a few seconds (10 or 15ish) while fogging through the throttle body. That's going to get the valves preserved.
Keep pulling the oilstick and checking, it might take some time for water to get there without running the engine.

VancouverMark 10-30-2014 07:08 PM


Originally Posted by NHGuy (Post 4211724)
Did any electronics get wet? If so you probably can't just start it.
But since the engine has no water in the crankcase you might have dodged that bullet. So remove the spark plugs and spin out any water in the combustion chambers right away. Doesn't have to turn backwards, the plugs are out. If you get water out of the spark plug holes oil the combustion chambers and valves. Then if you can't start it you can at least preserve the engine til you can fix the electrics. That can be done by bypassing the ignition either with a remote starter button or by pulling your kill lanyard so you can crank it over without starting. The remote button is best because you won't energize the fuel injection system. After you have cranked out any water with the plugs removed, put some fog oil in the spark plug holes and thread in your old spark plugs. Crank the engine for a few seconds (10 or 15ish) while fogging through the throttle body. That's going to get the valves preserved.
WTF, lift failed, and boat leaked. You had a bad week!

Thanks Guys!
The water came just below the EFI unit - to the top of the intake.
I will try spinning the water out and see what happens.

thirdchildhood 10-31-2014 06:20 AM

Fresh water? I think it will be fine once you dry everything out.

Cole2534 10-31-2014 01:19 PM

My old Maxum had some epoxy on a scratch from an incident with a stump. Well apparently that stuff came off on the way to the beach because we pulled it up on the sand a little and an hour or so later there was water 6" deep in he cockpit. Rut roh.

Hit the bilge and for a while and the old 305 fired right up. Never missed a lick after that either. :)

cheech 10-31-2014 07:10 PM


Originally Posted by Black Baja (Post 4211695)
Take the plugs out and turn it over or turn it over by hand backwards a few times then start it.

Why backwards?

thirdchildhood 11-01-2014 06:46 AM


Originally Posted by cheech (Post 4212225)
Why backwards?

Yeah, why, and won't that screw up the raw water pump impeller?

obnoxus 11-01-2014 07:08 AM

NO water in the oil,,,,,if the oil level is not OVRT full,,,,,,, pull the spark plugs and turn it over a couple times,,,, put the plugs back in and see if it fires up on the hose,,,,, check for milkshake one more time,

I would probably be proactive and send the starter out for a rebuild to save headache in the spring.

Black Baja 11-01-2014 08:15 AM


Originally Posted by cheech (Post 4212225)
Why backwards?

Backwards will not hydraulic the motor and break stuff if you leave the plugs in. Forwards will. Done it more times than I can remember with motors that were hydro locked

dereknkathy 11-01-2014 08:52 AM


Originally Posted by Black Baja (Post 4212441)
Backwards will not hydraulic the motor and break stuff if you leave the plugs in. Forwards will. Done it more times than I can remember with motors that were hydro locked

but we are talking plugs out and cranking by hand won't break anything. remove exhaust manifolds. they could be full and filling pistons. you will probably lose starter. maybe alternator and anything else that failed float test...trim pump solenoids, bilge blower, etc. a lot can be disassembled and cleaned.

Black Baja 11-02-2014 03:25 PM


Originally Posted by dereknkathy (Post 4212463)
but we are talking plugs out and cranking by hand won't break anything. remove exhaust manifolds. they could be full and filling pistons. you will probably lose starter. maybe alternator and anything else that failed float test...trim pump solenoids, bilge blower, etc. a lot can be disassembled and cleaned.

Minus well pull the motor replace everything electrical all wiring everything. While your at it may have been water intrusion in the transom, stringers coaring in hull sides/ top deck. Start cutting her up!

thirdchildhood 11-02-2014 04:11 PM

It's fresh water. Get it in a warm dry place with fans. Everything should be fine.


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