Re: 1950 packard 288 engine just rebuilt now has water in the oil
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Home away from home
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This one has really peaked my interest.
Did you check your oil after going for a drive? Was it milky, that is water and oil mixed? Or is the water migrating into the oil after the car is shut off? And no while smoke out the tail pipe once warmed up, correct? Could the block have a crack by one of the valve guides that opens up when the car gets warm, but doesn't show up during your pressure test? Maybe you could see evidence of water by removing your valve covers and inspecting your valve train? BTW, I'm like Flackmaster, more armchair than mechanic. But I have been far enough into my engine (327) to have replaced valve guides, rings, coated pistons, cleaned and tested lifters, etc. etc. Unsolved mysteries!
Posted on: Yesterday 22:14
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Re: 1950 packard 288 engine just rebuilt now has water in the oil
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Just popping in
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Yes you are correct about the long paragraph sorry. I did see water on the dipstick two different times thats why I drained the oil after letting it set overnight so the water and oil would separate. Thats when I got worried knowing what damage it could cause. When I first starting looking at your Packard forum I found " Genes post Dec 2020 " that had the same issue but that engine had set for a while after being rebuilt. Thats when I did all the testing and checks. I pulled the Intake / Exhaust manifold and found it was wet all four inlets going to the block. So based on your info I new their was a leak or crack somewhere around the seats or valve guides guessing it must be opening up when hot. Thats why I wrote to you guys asking for help as to where it could be.
Posted on: Today 7:39
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Re: 1950 packard 288 engine just rebuilt now has water in the oil
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Posted on: Today 10:00
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Re: 1950 packard 288 engine just rebuilt now has water in the oil
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Just popping in
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The last straw before pulling the engine and tearing it down was when I drained the oil after 1 hour of running it to work in the sealer it had gray / silver color floating on the top I knew it was bearing material. I had ran Irontite ceramic motor seal that my machine shop guy said to use because he had used it in other engines with success . I started thinking that if the engine still had a water leaking into the oil this sealer was in the oil when running it. I was hoping to be wrong but could not pick up any of the floating material with a magnet so I knew it was not good coming from the engine, my guess was the sealer was causing damage to the bearings being ceramic. With all the money I had put in this engine I had no choice but to take it back apart. Would have loved to been wrong but when I pulled the first rod bearing cap I was wright my perfect 74 year old crankshaft with std. bearings now had scratches you can catch a finger nail on and will need to be turned. "this stinks " The pistons still look good at least, I can get the crankshaft turned and bearings for it but will have to take it about 2 hrs away since my engine guy only polishes the crank. But still have to find the leak in the block and hope it can be repaired. Thanks again for everyone who has responded with questions and input. I'm going back to my engine guy Tomorrow and see if we can up the air pressure and find the leak.
Posted on: Today 10:51
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Re: 1950 packard 288 engine just rebuilt now has water in the oil
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Home away from home
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Oh no, this is bad news! This is not the kind of adventure we like to have with our cars.
![]() I think pressure testing your block to try to locate a leak is a good plan, it must be small! If you do locate the leak, and can repair it, once you get your crank done you'll be off to the races. I suspect you're getting pretty good at tearing down your engine....... Keep us posted!
Posted on: Today 12:15
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