Possible cracked block, need help troubleshooting.

[Boater31]

Just got back from working on the engine. Should be good for a while waiting on manifolds. Thanks for the advice. When I was there I ran a compression check, keep in mind it was cold (70?) so true number should be higher. Readings are #2,4,6,1,3,5- 115, 110,115,115,120,118. Throttle was closed also. I was mostly looking for a dead cylinder or somewhere else water could come from. All cylinders also held the pressure. I will be looking for new manifolds. The port side that got hot has much more gunk in it after looking at it more so assuming that's why it ran much hotter. Will know when new manifolds come.

 

[bruceb58]

No need to pull the valve covers. That will all evaporate over time. Blowing air over an engine will do zilch for moisture inside an engine. Just run the engine. That's the best way of getting rid of the moisture.

 

[Oshkosh1]

No need to pull the valve covers. That will all evaporate over time. Blowing air over an engine will do zilch for moisture inside an engine. Just run the engine. That's the best way of getting rid of the moisture.

You pull the plugs and the valve covers off...it'll dry out. Can't do much for what's in the pan, but it does work. If it's a real PITA to pull the valve covers it's not necessary but If it's that wet inside and it's gotta sit...I'm yanking them if it's just a few extra minutes but to each their own.

Obviously IF you can run the engine right away that's ideal, but if not...Fan on when you're not working on it. Works for flooded(gasoline) situations as well.

 

[bruceb58]

A fan blowing over emulsified oil will not do anything..trust me. I used to buy and restore autos that were caught in floods. The only way to get the moisture out of an engine, short of a complete disassembly, is to run it.

When I had an engine that got moisture in it from a bad manifold like the OPs, I ran it and changed the oil several times. Worked like a charm.

Running a fan in the bilge of a flooded engine with the spark plugs pulled is just plain foolish....BOOM!