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Thread: Unknown Sandy Substance on an engine Block

  1. #1
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    Unknown Sandy Substance on an engine Block

    Anyone know what exactly this stuff is that I found on my engine block?

    I have finally gotten around to getting under the hood of my old Dakota Pickup to figure out if its worth getting going again and I found the top of the block covered in this weird sandy type substance. The truck has been sitting since Christmas on the driveway and I haven't been able to start it since about january (no garage to work in and too damn cold to look at it). The motor would only crank and not fire. I had trouble getting the hood opened because the release was stuck and starting to rust. The truck was parked because it was leaking coolant off and on (Some days I would come out to a huge puddle, other days nothing, and it got to the point where it was leaking onto something hot and smoking and the coolant was too low that the heater would only blow cold air.

    I checked the oil and theres no signs of coolant, just smells a little of gas which I figured because it wasn't getting a spark on the driveway anymore. I bought a new water pump and coolant hoses to replace cause I figured thats the spot to start looking at for a leak, and some new spark plugs to hopefully get it firing again. (Thought maybe the head gasket was starting to go?)

    Well when i got the hood opened i found that rust was starting to creep in under the hood, and this whitish sandy powder all over and I can't figure out if its something bad I should be worried about, or just vaccum it all off.

    Here are some pictures


    Last edited by apuszczalowski; 06-06-2011 at 11:18 AM.
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  2. #2
    Stickybongsmoking's Avatar
    Stickybongsmoking is offline Yes, this is gawd damn muthafockling CTD NUT.
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    From what I can see in the pics, it looks like regular hold surface corrosion of the cast aluminum engine components. Somewhat normal in the salt belt, unfortunately.
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  3. #3
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    Thats what i thought. I was actually surprised how much it started to rust underneath after just letting it sit for a few months.

    I'm just going to vaccum it off and then try to get it started and fix the coolant like. Like most Dodge Dakotas, there also plenty of rusty body panels and the bumper that also needs replacing.

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