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Re: 1994 Sub when cold has loud knock
Well - the truck is running just fine now. I had a blown head gasket between cyls 4 & 6. Took me a couple of days over a couple of weeks but it is all back together and the knock is gone. driven it almost 200 miles since the repair. I guess the knock was from the rod or piston skirt when there was no 'load' on the cyclinder.
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