If you put the head in a wash tub, you can hook a hose to a faucet that allows hot and cold water.
If still on the engine use longer hoses.
Rig up a hose that puts water into the passage at the front of the engine and look for flow from a hose attached to the fitting on the rear of the head. cold water first. Does the water flow a minimal amount?
Then turn the hot water on and let it flow thru the head, if the flow increased after a period of time the valve is working fine.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
Last edited by Tom Vaught; 06-01-2020 at 10:12 PM.
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