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Results 1 to 18 of 18
  1. #1

    Default Water in Oil... Please help!

    Hi everyone. Not sure if this is the correct section to post in but here goes anyway... I have a 72 Kona with a mercruiser 3.0. I've been trying to get this boat restored for months now. Bought it (running) for $500 but had a bad outdrive and other various issues. I now have almost all the bugs worked out and was ready to hit the water for the first time the other day when I discovered water in my oil. Did an oil change just to be positive and sure enough the fresh oil turned milky again. So i went down today and bought a new valve cover, manifold and head gaskets. Tore it down, replaced the gaskets, refilled with oil and fired it up..... Oil turned milky again! Weird thing is that the oil level does NOT seem to be rising or if it is, its rising very slowly. Does anyone have an idea where the water could be coming from? Any help would be more than appreciated. Thanks

  2. #2

    Default Re: Water in Oil... Please help!

    Found a crack in the manifold. Water is leaking out of the water jacket into the exhaust ports on manifold. Could this be how the water is getting in the oil?? The intake ports on head seem to be saturated with oil... What is going on here!? Any help is greatly appreciated. Thanks

  3. #3
    Join Date
    Oct 2011
    Location
    maplevalley WA
    Posts
    6,302

    Default Re: Water in Oil... Please help!

    If the oil level is not rising it may be you didnt remove all the water out of the pan. Is the crankcase venting properly. hopefully it is not a cracked block. Did you use the proper torque pattern when bolting the head and manifolds on.

  4. #4

    Default Re: Water in Oil... Please help!

    If the oil level is rising, it must be at a very slow rate... I don't see a rise on the dipstick but the oil is milky after 5mins of running in driveway. I flushed the engine with fresh oil before refilling and it seems to be pretty milky again so sadly I don't think its residual from before repairs... Crankcase is blowing a pretty good amount of air out of vent tube on top of valve cover. What would this mean? Piston ring blow-by? I did use the proper torque patern on head and manifold. Like i mentioned in previous post, I have found a crack in the manifold leaking water into the exhast ports. With the water in manifold and piston rings blowing by, could this be how water is entering the engine? I just don't want to replace the manifold is there's other issues. Any ideas? Thanks for the info, much appreciated!

  5. #5
    Join Date
    Oct 2011
    Location
    maplevalley WA
    Posts
    6,302

    Default Re: Water in Oil... Please help!

    You can do a leakdown test on the cylinders but that wont tell you if the block is cracked. You can have the head magna fluxed to look for cracks. I cant think of any where else the water would get into the oil.

  6. #6

    Default Re: Water in Oil... Please help!

    So does that mean that you don't think that the water leaking into exhaust ports from the cracked manifold is the culprit? I was really hoping that i could swap the manifold and call it a day...? Any thoughts?

  7. #7
    Join Date
    Oct 2011
    Location
    maplevalley WA
    Posts
    6,302

    Default Re: Water in Oil... Please help!

    What year is the motor, from what I could see there is no other way besides a head gasket for water to get in the oil besides a cracked head or block. You know the manifold is cracked I suppose it coud be blowing water up past the valve guide seals. If the engine needs replaced you would need a manifold anyway. Maybe just change the valve guide seals and manifold and see what happens. I changed the valve guide seals in my ford V-6 without pulling the heads. You just put the cyl your working on at TDC on the compression stroke and with a compression tester fitting put around 30 lbs pressure in the cyl to hold the valves up while you change the seals. Works pretty slick. If you pull the head allways put a new head gasket on it. Valve guide seals would explain oil on the intake valves also.

  8. #8
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    4,023

    Default Re: Water in Oil... Please help!

    Quote Originally Posted by greichert1 View Post
    So does that mean that you don't think that the water leaking into exhaust ports from the cracked manifold is the culprit? I was really hoping that i could swap the manifold and call it a day...? Any thoughts?
    Ayuh,... I think the Block Cracked the same time the Manifold Cracked,....



    When they Froze....

    Odds are, ya need Another motor,...
    Any Grease is Better,... Than No grease at All....

  9. #9

    Default Re: Water in Oil... Please help!

    Ok, so heres the update... I pressure tested the engine cooling system(with head on) and it seems to hold just fine. A new manifold costs close to what the boat is worth so i decided to try jb-weld on the crack first. The jb-weld seems to be holding up well and the manifold now holds pressure. I once again put everything back together with new gaskets and oil. Fired it up today just to get milky oil once again! If the water jackets all seem to be holding pressure, then where could the water be coming from? The exhaust ports are now bone dry where they were filling with water before. The intake ports are once again soaked with what looks to be oil. I am at a loss here... I cant afford to just buy a new engine. Does anyone have any ideas what could be going on here? Thanks for any input.

  10. #10
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    4,023

    Default Re: Water in Oil... Please help!

    I pressure tested the engine cooling system(with head on) and it seems to hold just fine.
    Ayuh,.... How'd ya pressure test it,..??

    I'm thinkin' ya Need a new motor...
    Any Grease is Better,... Than No grease at All....

  11. #11

    Default Re: Water in Oil... Please help!

    First off I just want to thank everyone on here for all the helpful advise. This is a great forum and I wouldn't have gotten this far without you guys... Now with that said, I see that you are an outstanding contributor "bondo" but contributing the same useless advise over and over is not very helpful to me... I understand that you think I need a new engine but do you have any reasoning behind that diagnosis or is that just your go to advise? I mean i'm sure it'll fix my problem but it seems a little excessive dosen't it? If my window breaks, i'm not going to buy a new house. I'm going to buy a new window. I'm here to pinpoint the problem, not to be told that I need a new engine or a new boat... Now if you have some info to back up your diagnosis then I am all ears but "It's broke" isin't helpful. Thanks again everyone for all the useful advise. I'll keep at it and update as soon as possible.

  12. #12
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    4,023

    Default Re: Water in Oil... Please help!

    Quote Originally Posted by greichert1 View Post
    First off I just want to thank everyone on here for all the helpful advise. This is a great forum and I wouldn't have gotten this far without you guys... Now with that said, I see that you are an outstanding contributor "bondo" but contributing the same useless advise over and over is not very helpful to me... I understand that you think I need a new engine but do you have any reasoning behind that diagnosis or is that just your go to advise? I mean i'm sure it'll fix my problem but it seems a little excessive dosen't it? If my window breaks, i'm not going to buy a new house. I'm going to buy a new window. I'm here to pinpoint the problem, not to be told that I need a new engine or a new boat... Now if you have some info to back up your diagnosis then I am all ears but "It's broke" isin't helpful. Thanks again everyone for all the useful advise. I'll keep at it and update as soon as possible.
    Ayuh,.... I Was tryin' to help ya find out Which window is broken,...

    But,... hey,... you know it All,.... You figure it out....
    Any Grease is Better,... Than No grease at All....

  13. #13

    Default Re: Water in Oil... Please help!

    Quite the opposite actually... If I knew it all, then I wouldn't be here asking questions. I'm just saying that your input is useless to me. If you we're actually trying to help then you must have some sort of suggestion... Example- Maybe the block is cracked, try a cooling system pressure test... I saw no such USEABLE input in your post, maybe I skipped over it? Maybe YOU can afford to just change the engine every time it hiccups but we aren't all that lucky. Oil in the water Isin't necessarily a death sentence for a boat... I mean I appreciate your guess but I think I'll keep trying to find the actual problem...

  14. #14
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    4,023

    Default Re: Water in Oil... Please help!

    I'm just saying that your input is useless to me.
    Ayuh,.... Maybe if You answered the questions posed, you might accept that you've got a Cracked Block, 'n you Need a different motor....

    Instead, yer throwin' a hissy fit, 'bout My postin' abilities, 'n knowledge,..??

    There's No possible way for water to go from the exhaust manifold to the oil pan, when the motor is Runnin'....

    You have a Cracked Block....
    Any Grease is Better,... Than No grease at All....

  15. #15
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    5,484

    Default Re: Water in Oil... Please help!

    Quote Originally Posted by bondo View Post
    Ayuh,.... Maybe if You answered the questions posed, ...
    You couldn't have said it any better.

  16. #16
    Join Date
    Oct 2011
    Location
    maplevalley WA
    Posts
    6,302

    Default Re: Water in Oil... Please help!

    If you put lipstick on a pig it is still just a pig. Did you change the valve guide seals.

  17. #17

    Default Re: Water in Oil... Please help!

    Uhh, which question are you refering to? "Ayuh,.... How'd ya pressure test it,..??" I pumped all the water jackets full of air and waited for the gauge to drop... Is there another way to pressure test that I am unaware of? And who is throwing a hissy fit? I believe I was pretty cool and collected about my rant... There is a test for every diagnosis and all i'm sayin is that if you're gonna GUESS that my engine is cracked, then you might want to back it up with a diagnosis, like; "If your pressure test doesn't hold, then you have a cracked block..." Now that is constructive... I mean, that is what this forum is for right...? And no, I haven't changed the valve guide seals yet, but thanks kimcrwbr1, definitely good advice. I cranked the pressure tester up to 20(actual)psi since I realised my tank gauge was pretty inaccurate. Manifold leaks but engine will hold 20psi all night long. Ordered a manifold today and will get to the valve guide seals while i'm waiting for it to come in. Ill update as soon as possible... Thanks again everyone

  18. #18

    Default Re: Water in Oil... Please help!

    So here's the update... The new manifold came in and I put everything back together yesterday. Ran it for about 30mins(The longest that i've ever run the engine) NO MILKSHAKE!!! Finally! Thanks everyone for all the help! Can't wait to get out on the water FINALLY!!! Still runs a little rough though. Idles perfectly, but randomly missing and sputtering when throttling up... Already changed the old contact set and plugs. The boats been sitting for years so i'm thinking bad gas...? I drained as much as possible originally and filled up with premium, but I think there was still a gallon or two of old gas left in there... Any thoughts anyone...?

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