klcracing Report post Posted May 26, 2014 I have changed the radiator and reservoir antifreeze on my Onan 7500 and run it for appox 5min and stops running with blink code hot. Is there a bleeder valve to assist with releasing air in the system. I'm thinking it could be vapor locked. Any help would be appreciated. Share this post Link to post Share on other sites
RangerSmith Report post Posted May 27, 2014 On mine there was no bleeder. I had to put the antifreeze in the radiator cap itself and not the overflow bottle. Share this post Link to post Share on other sites
wolfe10 Report post Posted May 27, 2014 This video gives a lot of information: http://www.youtube.com/watch?v=0LB5ZhvhXas Share this post Link to post Share on other sites
klcracing Report post Posted May 27, 2014 Well it had sat a couple of days and burped itself. I started it today, and let it run for about four hours under a load and it did not overheat! Thanks for the info tho. Share this post Link to post Share on other sites
