Just think, the end that has to heat up and move the piston is what goes on the engine side. So the longest end would go toward the engine, the side with the spring.
It is possible to have a new but bad thermostat.
Another way to make sure there is no air bubbles is to remove the temp gauge probe/sending unit.
Last edited by drummin52; 04/01/2009 2:01 AM.
