Cracked block?

[Agowen]

I started my 93 sport nautique for the first time this year and when I hooked the water hose up to it and the engine run for about 60 seconds when I noticed the water was not coming out the back. So I shut the engine off and pulled the dip stick out and sure enough the oil has water in it. I'm guessing this is because the block is probably cracked. The boat was winterized but not sure i got all the water out. Any ideas on what I should do next? If the block is crAcked what's the best way to fix it

[Chexi]

Unfortunately, if the block is cracked, the best way to fix it is to get a new engine.

[Andy Mohler]

Water could get in through faulty seals in the risers. I had this happen on a Supra with a 454, somewhat different symptoms, and I thought I cracked the block. In fact, an engine mechanic told me I needed a new engine, which I could not afford. I had poor water flow, motor cranked real slow then locked up. Thankfully I did not force it any farther. But it turned out to be a leaky riser gasket, which some water got into two cylinders. Some water had gotten into the oil also (still not sure how).
I had rusty water in the two cylinders that had sat there all winter, and figured I might as well try something unconventional. I replaced the gasket, drained out the water from the cylinders, changed engine oil. Before restarting, I spent several hours hand pulling the motor through with a BIG socket wrench on the crank, and added some thick oil (like motor honey) inside the two cylinders. Engine started fine. I check compression and it was a little off on the two cylinders, but sounded fine and ran great for another 10 years, and was still running well at 23 years when I finally sold the boat. I'm sure some of the experts on the site will have other opinions but this worked for me, and maybe will for you.

[tjnuxoll]

Start by pulling the plugs. Don't assume the block is cracked yet. It is possible that the last time you ran it it injested some water. Did it get hot?

[LakeRats]

Agree, don't assume cracked block just yet. 60 seconds of running may not be long enough to heat up to open thermostat to allow water out exhaust. If it is cracked (been there done that) a rebuilt short block for that vintage engine is not horribly expensive, not too difficult to change.