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Thread: Water Ingestion

  1. #1
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    Water Ingestion

    Hey folks,
    I am just starting work on an old toyota 22R engine that may have ingested water sometime in the past.

    It is an old farm vehicle and a long time ago it ran beautifully but since a deep water crossing where it coughed and spluttered it has been under powered.
    The only symptoms i know of are the engine has trouble getting up to speed and is sluggish and certainly wont cruise at highway speeds like it used to.
    I haven't noticed it using any oil and the cooling system is fine and never loses a drop and temperature is normal no matter how hard you work the engine.

    Why question is, what would water have done when it went into the engine? It must have been just a very small amount of water as presumably the rings are fine as it doesn't blow smoke or use oil? And the engine didn't blow up or completely stop working! I was thinking that something in the head must be worn (valves/seats) and that's why it's got no power? Does this sound right?

    I will check the valve clearances soon as there is a bit of a top end clatter sometimes under load and wonder if just setting them correctly will compensate for wear and bring back power?
    Thanks

  2. #2
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    22R's are so underpowered i dont think you could tell if it had less than usual, if it runs then i'm not sure if water would cause poor running unless the electrics are still wet ?
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  3. #3
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    Ha!
    Yes the 22R doesn't match my rover 3.9 for power, but they are still great little engines.

  4. #4
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    Might have bent the conrods and if it has it will have lost compression. Water dont compress so something will have bent. My mate drove through a deep puddle with his 186 HG panelvan which had a stupid holly and foam air filter on top. Water went into the engine at about 5000 rpm and it stopped. Result was 6 bent conrods. Only slight bends except for no. 3 was like a banana. Hope its not the case with urs. Engine blocks are easy to get but heads are very hard to find.

    Cheers Rod

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  5. #5
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    Thanks.
    I have been meaning to buy a compression tester anyway.
    If the conrods can bend when water is in the cylinder - what happens to the valves/seats - do they wear? Or as the compressed water comes up will the exhaust valves be fine as they are open and the intake valves be closed (vice versa) so all good?

  6. #6
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    Changed air filter? Pull carb apart, clean and inspect. Distributor, same deal. When the fan hits water, it can fire it into surprising places.
    Basically, check air, fuel and spark systems. If they're all ok, then start looking at mechanical stuff, - first thing would be a compression test.
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  7. #7
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    I'm with 67Hardtop. If it's lost power and the only thing that's changed is a bit water ingestion I'd say rods. Compression check will confirm in 10min.


    A hydraulic lock doesn't usually damage the valves as they are closed against their seats when it locks. I'm a marine guy and it happens all the time to marine engines.


    How long was the water in the engine? Was it cleared out and run straight away?
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  8. #8
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    22R? I see some folk are talking it's been hydrauliced. I don't want to put them down, but I would bet that isn't the case here. The things ran low compression when new. And they are strong. I'd be looking for water in the fuel, and, if, as you say, it;s running, I'd be looking for a jumped timing gear/chain. seen that a few times on these. They are a tough engine, but, being petrol, drowning them usually means they stop before bad things, like hydraulicing, can happen. Could be wrong, but I'd check the cam timing. Like I said, seen it more than once.
    ​JayTee

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  9. #9
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    Quote Originally Posted by Finnius View Post
    Thanks.
    I have been meaning to buy a compression tester anyway.
    If the conrods can bend when water is in the cylinder - what happens to the valves/seats - do they wear? Or as the compressed water comes up will the exhaust valves be fine as they are open and the intake valves be closed (vice versa) so all good?
    If water gets into the cylinder it will have no effect on the valves. They are either open, so water will pass out through the exhaust, or out through the intake side, carby, or injection, or they're closed, and water will find another way.

    Quote Originally Posted by Finnius View Post
    Or as the compressed water comes up will the exhaust valves be fine as they are open and the intake valves be closed (vice versa) so all good?
    If the valves, exhaust or inlet are open then the water won't be compressed. All that would happen would be that everything would get a good wash. Trouble is, water isn't like air, and it moves more slowly, and is in everyday terms incompressible. In a normal cycle of the engine water won't get pushed out in the way the fuel air mixture will, compounded by the fact that water doesn't burn. So water will cause damage. I doubt it will be as bad as some here think , because water will stop a petrol engine usually before the bad stuff happens. I hope I'm right, for your sake.
    ​JayTee

    Nullus Anxietus

    ​Getting involved in discussions is the best way to learn.

    2000 D2 TD5 Auto: Tins
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    1980 SIII Petrol Tray: Doris
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    Nanocom, D2 TD5 only.

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