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Water in oil |
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newguy1986 
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Joined: April-08-2011 Location: Houston Status: Offline Points: 226 |
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 Topic: Water in oilPosted: June-13-2014 at 10:59pm |
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All,
I have been battling water in my oil and can't find the problem. Need other sugestions. Had heads checked. They were cracked so I put gt 40 heads on. Completely rebuilt Intake checked out fine. Obviously a complete gasket kit was used during rebuild. And it starts great. First bump. Checked all the plugs and none have any sign of water Can some one please help? |
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1986sn 2001
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oldcuda
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Posted: June-13-2014 at 11:14pm |
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Are those equipped with oil coolers? Never had a Ford powered boat so don't know.
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newguy1986
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Posted: June-13-2014 at 11:21pm |
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No not that I am aware of. 1986 ski nautique 351w
Compression test results 1- 120 2 - 118 3 - 118 4 - 122 5 - 120 6- 105 7 - 105 8 - 120 |
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1986sn 2001
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Nautiquehunter
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Joined: December-31-2008 Location: Lake Lanier GA Status: Offline Points: 1010 |
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Posted: June-14-2014 at 2:21am |
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Did it freeze? Did you check the exhaust manifolds? If thats not it you may have internal cracks in the block.
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malibud
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Joined: July-08-2009 Location: north carolina Status: Offline Points: 613 |
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Posted: June-15-2014 at 11:09am |
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Those numbers are a bit low . I think you need a 100 to run. My block cracked between the cylinders so it was easy to see. Is that reverse rotation engine?
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newguy1986
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Posted: June-17-2014 at 11:14am |
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yes it is reverse rotation
Is there any other way for water to be getting in? Im racking my brain but i keep getting to a cracked block. |
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1986sn 2001
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SNobsessed
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Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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Posted: June-17-2014 at 4:40pm |
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For grins & giggles I would plug all water ports & pressureize the water circuit to 15 PSI. Maybe you could hear where the leak is with a stethoscope. You may have to do this hot, but that state won't be hard to get to with the water off!
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Tim D
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Posted: June-17-2014 at 6:51pm |
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Did you inspect the plate behind the water pump?
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Tim D
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Waterdog
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Posted: June-17-2014 at 8:08pm |
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When I bought my 86 Silver Nautique I knew it had water in the oil. I changed the exhaust manifolds (they were momicked)It ran fine for a few hours and I thought it was fixed. We went out for a long ride and it was full of water when we got back to the dock. The block was cracked along the cam journals 6in or so it was very hard to find and only leaked when fully warmed up. 1) The intake can crack under the t-stat 2) Heads 3) Block 4) Exhaust manifolds 5) We made a list before for water in oil. There's more but I'm drawing a blank. |
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newguy1986
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Posted: June-17-2014 at 9:06pm |
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Not sure what you are referring to with the plate behind the water pump. Can you explain that one?
I have replaced the heads Intake has been verified by a great machine shop Exhaust manifolds were blown out and cleared of any blockage but I will for sure check. These again. Any other way other than connecting a water hose to them and watching for water out the exhaust ports? Block - I'm about 95 percent sure this is the issue. Thoughts? |
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1986sn 2001
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MrMcD
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Posted: June-17-2014 at 10:27pm |
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Were the Head Bolts installed with sealant on the threads? The bolts go straight into the coolant. New Head bolts would come with sealant on them, used bolts can be used but would need new sealant added on the threads.
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MrMcD
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Posted: June-17-2014 at 10:32pm |
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Each head gasket should have FRONT stamped in the gasket and you locate the Front stamping at the front of the engine, away from the flywheel or flex plate. They can be reversed. The same gasket is used on both sides so one side the stamp will lay on the block but Front is still at the front of the engine, the other side the stamp will be up facing the head. Most also have a tab that can be seen on the front of the head, it extends out on the front of the block so you can see it to verify the gasket is on correctly.
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Tim D
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Posted: June-18-2014 at 11:51am |
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The part between the water pump and timing chain.
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Tim D
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