How does one hydro lock a IO?

[sean.deangelis]

Re: How does one hydro lock a IO?

I wouldn't give up on buying it so fast. Price that is being asked aside: Yes there are a number of catastrophic failures that can cause a hydrolock. BUT, with trailer boats it can be common for the owner to use low octane pump (gas station with ethanol) gas coupled with water ending up in the tank or a number of other reasons a bit of moisture ends up in the tank. Shut the boat off, it diesels hard enough to run backwards and "zing!" you hydrolock a cylinder (probably the rear port side...my personal experience with the 4.3).
If you can comp test every cylinder and get no failures that's good news.
In the case of my brothers boat (4.3 Merc): It was dieseling to the point of turning backwards (nearly every time out) because he was putting 87 pump gas in it and doing a LOT of wakeboarding (holeshot, holeshot, holeshot). The engine would get pretty hot (30 over thermostat opening but nowhere near overheating) and diesel when shut off. Those 1-off scenarios coupled with the idle being about 200rpm too high and the timing being about 2 degrees too advanced locked the port rear cylinder. I adjusted both idle and timing, made him promise to use the non-eth gas from the marina and it's never happened since.

 

[fishrdan]

Re: How does one hydro lock a IO?

I call up the dealer and he says the engine is hydro locked.............

WHY wouldn't the "dealer" pull the plugs and clear out the water to (for the lack of a better term) un-hydrolock it. Probably because the hydrolocked engine is now rustolocked... :suspicious:

 

[tpenfield]

Re: How does one hydro lock a IO?

WHY wouldn't the "dealer" pull the plugs and clear out the water to (for the lack of a better term) un-hydrolock it. Probably because the hydrolocked engine is now rustolocked... :suspicious:

Is it clear that the engine is still hydro-locked or if there is residual damage from the hydrolock? like bent connecting rods, cracked bearings, crankshaft damage, etc.

 

[wgl333]

Re: How does one hydro lock a IO?

Just a couple quick observations...first, this dealer is in Upstate, NY just north of Syracuse, so hurricane damage probably ain't likely. Second, they do a lot of consignment sales, so, the trailer this boat is on is probably the one the seller placed it on as the dealer blocks up the boats they own, they do not leave them on trailers. If they take a boat in on consignment, it is "as is" and is sold the same way. No, I don't work for them, but, I did buy a boat from them last fall and am quite pleased.

 

[saumon]

Re: How does one hydro lock a IO?

WHY wouldn't the "dealer" pull the plugs and clear out the water to (for the lack of a better term) un-hydrolock it. Probably because the hydrolocked engine is now rustolocked... :suspicious:

"rustolocked" :lol: ...still make me laugh an hour later!

 

[haulnazz15]

Re: How does one hydro lock a IO?

"rustolocked" :lol: ...still make me laugh an hour later!

Actually, it happened to my rig! I had let the boat sit for several months with a non-waterproof cover on it, and the doghouse let water right on top of the flame arrestor. It got into two of the cylinders (unbeknownst to me) and the engine was pulled out and sat in a garage for a year while I was rebuilding the transom. When I reinstalled the engine, it wouldn't crank over. Upon tear down, it took a pipe and a 3lbs sledge hammer to get two of the pistons pounded out. No water in the oil, crank/etc all clean and in good condition. Ruined a perfectly good engine though due to the cylinder walls being bad in those two cylinders!

 

[JaseBosto]

Re: How does one hydro lock a IO?

Look at the sellers location... its probably the remains from hurricane sandy.

No. Brewerton is nowhere near the effected areas of Sandy.

 

[Chris1956]

Re: How does one hydro lock a IO?

My Mercruiser 4.3LX hydrolocked in my driveway, immediately upon shutting down after initial spring start up. Took the plugs out and cranked it, added some oil and then went to find the issue. Turned out to be the gaskets and gasket surfaces between the manifolds and risers were rusty enough to leak. Lapped them down and use some good mercruiser riser gaskets and problem was solved.

 

[90stingray]

Re: How does one hydro lock a IO?

No. Brewerton is nowhere near the effected areas of Sandy.

Hey, it was just a thought. Just because it wasnt in the direct location of the effected areas doesnt mean its not possible. We have seen sandy remains show up in Florida auctions.

 

[littlerayray]

Re: How does one hydro lock a IO?

that boat is fuel injection so forget about water getting into carb

 

[littlerayray]

Re: How does one hydro lock a IO?

a song comes to mind for ne1 thinking of buying that boat for more then 1500$
"run to the hills" by ironmaiden :bolt:

 

[sweet addiction]

Re: How does one hydro lock a IO?

a song comes to mind for ne1 thinking of buying that boat for more then 1500$
"run to the hills" by ironmaiden :bolt:

One of my favorites.

 

[rick3452]

Re: How does one hydro lock a IO?

I had spyder cracks on my plastic air cleaner/ carb cover, and when it rained for two days, the water driped into the carb.
That did it........