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Mysterious 440 oil leak-SOLVED- faulty sending unit...

5626 Views 10 Replies 5 Participants Last post by  Evildriver-3
Ok, I have a mysterious leak on my 440. It seem to be originating somewhere around the rear driver side of the engine, and runs down around the starter, through the clutch fork boot and drips out the bottom of the inspection cover and also from the corner of the bellhousing onto the driver side exhaust pipe. I have replaced valve cover gaskets, oil pan gasket and rear main seal, and I removed the inspection cover to verify that the rear main was still good. The only thing I can guess is the oil pressure sender or the valley pan gasket, but the oil doesnt seem to be up that high. It seems like it is coming from the head gasket area maybe? Anyone have similar experience? Thanks.
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I know it is repetetive but double check your valve cover gasket on that side. I had a similar problem and it was the valve cover - way in the back closest to the firewall had a leak. Just thinking you should double check that before you go tearing into something else more complicated.
I got the rubber gaskets, don't seem to have much luck with the cork ones. Make sure the gasket is seated in there nice and snug with just a little gasket adhesive to hold it in place and keep it from squirming out of place when you torque it down. Check to make sure the flanges on your covers are as straight as you can get them.

Never heard of porous heads though.

Glad you found it William. ;D

Moral of the story: at least keep your engine clean enough so you can tell where the leak is coming from.

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