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Thread: SD33T water in oil pan

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    SD33T water in oil pan

    Hello, i recently purchased a MQ with the SD33T engine wich havent been started for 7-8 years,

    Last night i was getting ready to start the engine and 1st thing i did was check oil and coolant, and i suspected thelre was no coolat at all.
    So there i am putting the coolant in the radiator and at some point i hear the coolant droping in the oil pan and immediately stoped adding more.Checked the oil via the dipstick and it was just like i suspected...coolat in oil pan.

    Today i removed the oil cooler because someone told me that it could be cracked and coolant could be leaking from there but i didnt noticed any damage and there was no sludge build up.

    Anyone with an idea where to look next? Could it be a head gasket or blown head?

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    Travelling Podologist Cuppa's Avatar
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    Without starting the motor? Unlikely to be the cylinder head or head gasket if the coolant wasnít full & not under pressure. Sounds like the block or a cylinder sleeve may be damaged. Not good news if so Iím afraid. Did you check the oil for coolant/water before pouring coolant into the radiator? Itís possible that what you have seen in the oil pan is condensation after it has sat for all that time? Fingers crossed. Also seems odd there was no coolant in the radiator. If the radiator & hoses are not leaking the coolant has leaked away somewhere. Hard to imagine anyone would have drained it & left it.

    2006 4.2TDi ex-Telstra Remote area Camper.
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    Quote Originally Posted by Cuppa View Post
    Without starting the motor? Unlikely to be the cylinder head or head gasket if the coolant wasnít full & not under pressure. Sounds like the block or a cylinder sleeve may be damaged. Not good news if so Iím afraid. Did you check the oil for coolant/water before pouring coolant into the radiator? Itís possible that what you have seen in the oil pan is condensation after it has sat for all that time? Fingers crossed. Also seems odd there was no coolant in the radiator. If the radiator & hoses are not leaking the coolant has leaked away somewhere. Hard to imagine anyone would have drained it & left it.
    li

    It literally had no oil and coolant in the engine. I added oil 1st & then coolant.

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    Travelling Podologist Cuppa's Avatar
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    Quote Originally Posted by Neo_OverlandMKD View Post
    li

    It literally had no oil and coolant in the engine. I added oil 1st & then coolant.
    Hmmm, doesn’t sound good to me. Suspect you may be up for a replacement motor which will likely be cheaper than a full rebuild. I had a damaged block on a similar ED33 motor a bit over 10 years ago & managed to get a low km Japanese import replacement from a wrecker. At the time of looking there were a few SD33’s around, but they might be bit thinner on the ground now. Was way cheaper than a rebuild & was a good motor, but anything second hand is a gamble.

    If anyone else reading this can think of a less dramatic reason for coolant running into the sump without the engine even running, please post.
    Last edited by Cuppa; 18th October 2020 at 10:12 AM.

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    Problem solved @ the cheapest possible way i could think of... it was the head plug welch.

    Thank you for your time and effort to help me here. Appreciate it.

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