Thread: 318 running hot

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Originally Posted by firebird77clone

I have flow, And bubbles, and the coolant looks like crap, a little dark with dark particles.

I'm thinking the machine shop did a poor job of cleaning the block

If it is a steady stream of bubbles and not just bubbles getting the air out,then it is possible it hot one time too often and your seeing the compression escape from a cylinder(s) with a bad head gasket or cracked head.Pull the plugs and take a look see if any show signs of coolant.