Water being induced into my engine & engine oil - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts
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post #1 of 40 (permalink) Old 05-22-2016, 10:46 PM Thread Starter
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Water being induced into my engine & engine oil

So I finally figured out my hesitation is from water getting sucked into my engine one way or another. Not sure how, but what are typical places this can happen? F15X
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post #2 of 40 (permalink) Old 05-23-2016, 05:51 AM
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Seeing as preliminary compression shows low, I am leaning on possible blown head gasket or cracked head. It could also be a cracked cyl. During disassembly, pay attention to the exhaust system, looking for any blown gaskets there that could be leaking water back into the engine when shut down (That's a long shot, but needs to be checked).
It also may have previously been over heated and warped the head, and/or cyls., depending on how hot it got.
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post #3 of 40 (permalink) Old 05-23-2016, 06:31 AM Thread Starter
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I can only hope for a head gasket issue. I will finish the compression test and see what the results are. I am going to start flushing out the water/oil from the engine today and try to get it clear again and see if I can get her running. Will post back the results.

Any good sources for head gaskets and or heads? What about an engine?

I have not overheated the ski prior to this event. No warnings ever other than the FI 45 from my modulator pack being adjusted wrong.
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post #4 of 40 (permalink) Old 05-23-2016, 06:56 AM
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Exhaust manifold is most likely leaking.

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post #5 of 40 (permalink) Old 05-23-2016, 05:31 PM
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Depending on how bad the head is warped, if it even is, will dictate if it can be resurfaced.
If a head is needed, ebay is a good place. If the engine needs to be rebuilt, I highly recommend short blocks r us. Absolutely top notch.
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post #6 of 40 (permalink) Old 05-23-2016, 06:06 PM Thread Starter
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so the compression test results are cyl 1)135 psi cyl 2)100 psi cyl 3)145 psi cyl 4)140 psi

now could the case being extremely overfilled with water and oil cause worse results?
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post #7 of 40 (permalink) Old 05-23-2016, 06:07 PM Thread Starter
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short blocks r us does not seem to sell blocks etc for hondas.
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post #8 of 40 (permalink) Old 05-23-2016, 07:07 PM
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Most of the time, he just rebuilds the engine you send him, unless it is completely trashed.
100 is not to far off, might just be some scored rings. Get the oil and filter changed,fire it up, and see what the bottom end sounds like. If things are nice and quiet, the bottom end is probably good. let it cool, and do another compression check on the lowest cyl. I'm more concerned with the water being in the crank case, than being overfilled. With a four stroke, over filling the crank case makes higher case pressures that can blow seals, and push that liquid into the intake system via the vent tube.
Pull the exhaust and manifold and see if there are any signs of leakage. should be apparent.
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post #9 of 40 (permalink) Old 05-23-2016, 07:44 PM Thread Starter
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Alright tomorrow I am going to buy the tool to remove the oil and get it all flushed out and see if I can get her running and take another test with real oil and when the engine is warm, which should produce more accurate numbers right?
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post #10 of 40 (permalink) Old 05-23-2016, 08:35 PM Thread Starter
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Btw my battery was pretty low so i did another test with it charged. Something odd occured.

With the battery fully hot it produced the following.

Cyl 1 150 psi
Cyl 2 100 psi
Cyl 3 155 psi
Cyl 4 145 psi
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