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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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Most likely the sender or valley pan, and it's running down the back where it drops off after the valley pan bolts and before the trans bellhousing bolts to the block, if a head gasket was leaking oil, you would hear compression loss also since the oil galley is on the inner side of the block in the cam valley and not close enough to the outside block
Well when ever looking for a leak it is a good idea to bath the motor in some toxic grease cutting material 1st
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