DeLoreans don't like to be overheated. Once the coolant level drops significantly, the temp guage is not reliable. Also, once you shut the engine off, it goes into a heat soak until it can air cool, which means the temperatures can actually rise for a little while before they start to drop. This is even worse when you don't have any coolant in the water jackets around the piston liners and in the head to take up some of the heat. Even though the water is not circulating, it helps get heat to the outside of the engine block and keep peak temperatures lower. My guess is that you probably have at least one blown head gasket and potentially warped heads. Get the leak fixed and have a compression test, a coolant check and an oil change. There is a test that looks for combustion byproducts in the coolant that will tell you if gasses are escaping into the coolant. Checking the oil will tell you if there is coolant letting into the sump. -- Mike ________________________________ From: Rick Heile <rick.heile@xxxxxx> To: dmcnews@xxxxxxxxxxxxxxx Sent: Tue, July 27, 2010 11:15:43 AM Subject: [DML] Re: Overheating from Coolant Leak Paul, I hope you are more lucky that I was. I too had a very short engine overheat which I quickly shut down and repaired the problem. Since then I noticed that I was losing coolent, about 2 cups/100 miles. I went through my entire cooling system replacing many things but this coolent loss did not change. The end result, I had cracked my head and coolent was leaking into the cumbustion chamber and burning as steam along with the fuel. This was noticible when first starting I had quite a bit of smoke coming from the exhaust. Anyway, this winter I am sending my heads out to be repaired. Since then I keep a gallon of coolent in the trunk and daily check and refill the coolent level. Rick [Non-text portions of this message have been removed] ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: dmcnews-digest@xxxxxxxxxxxxxxx dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/