Sorry guys if this has already been posted there's a lot of info on this forum to sort though. I'm just trying to figure out if my water pump is the cause. It's a 03 cobra 50,000 miles with 2.6 KB with all supporting mods. Ok, after noticing that the the temp. gauge going to H, I pulled over to notice antifreeze on the ground and steam coming from the ... over heating. When I got the car home I replaced the tstat thinking that was it. When I went to burp the system I noticed no circulation from the burp tube where you let the air pockets come out of and fluid rising in the expansion tank after running the car for 10 minutes. So I shut the car off. Any thoughts of what it could be and was I doing something wrong when burping the system. Thanks