View Full Version : Dewinterizing

05-02-2012, 05:58 PM
Has anyone ever had an airlock after dewinterizing and what can you do to prevent this from happening?

05-02-2012, 06:21 PM
The only air lock I experienced was the first time I took my new to me boat out. I purchased and test drove in Georgia, winterized and towed it home to Canada. In the spring, after dewinterizing, the first time out the temp spiked. Like gauge all the way to the top. As I pulled the throttle back to shut it down, the temp suddenly returned to normal. Later in the summer I had to change my circulating pump and I found that the thermostat didn't have a bypass hole, so until the thermostat opened there was no water going to the engine. Changed the thermostat and have never had a repeat.