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Guys,
Great info. Tell me if I’m understanding the fix to this steam pocket problem.
1. Ensure distilled water/coolant level in the chrome expansion tank is up to the divider inside the tank (cold engine).
2. Try purging the system by opening the expansion tank (NOT when engine is hot) Start the engine, add fluid to expansion tank. Loosen the brass fitting on the end of this brass tube and watch for air escaping along with a little coolant. When the air is gone you'll only get coolant. Tighten it back up. Having the front of the car higher than the back helps too when doing this.
3. Check to see the sending unit line has a large loop in it such that the line extends straight upward from the sending unit at least 3 or 4 inches.
Thanks
Bob
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