Hmmm.. this sounds odd, I hope it works for you. Keep us posted, I have drained my heater every season for the past three years and never developed an "air pocket". I just simply reconnect the hoses. Someone please correct me if I am wrong, but the system should automatically push any air out with the force from the impeller pushing the water through the entire system???
Have you checked to make sure the T-stat is not sticking? What temp T-stat do you have in the boat? I believe you should have a 160 in there, at least this is what the Indmar 340/Monsoon 350 are using.
Last edited by Fman; 05-23-2012 at 01:17 AM.
White/Charcoal, 2011 VLX
2008 Supra 22SSV