Rich, I found a neat device called The Bubbler that can detect air via compression in the coolant. Here is the link. It's a neet tool.You might be intrested. Bottom of page. John Hervey http://www.specialtauto.com/delorean-parts/cooling-system.html -----Original Message----- From: cruznmd [mailto:racuti1@xxxx] Sent: Wednesday, April 23, 2003 5:54 AM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Starting from scratch (from "critical engine failure") For those of you who remember that article... Based on all the advice I've received, I'm operating on the assumption that I've blown a head gasket. (Coolant mixed with oil & a vacuum leak that I can't find). People told me to find the source of the leaking fluid mix. I've removed the intake, and crawled all over the engine. No fluid is leaking from the head/block mating surfaces, dipstick tube, oil pan plug or gasket. The source appears to be from the rear crank seal, but I haven't split the engine from the transmission to check yet. I am also operating on the advice that these blocks very rarely crack. This engine only has 22K on it, and it sat for many years so I believe it. I intend to yank the engine and just rebuild it. I am on a budget however. I intend to get the engine recondition kit #102565 from delorean.com, bearings and rings. Since the miles are low I'm not going to do the chains and sprockets. My question: Are there any other "must have" items that aren't in that kit, that I need before I start this? Thanks. Rich #5335-MD To address comments privately to the moderating team, please address: moderators@xxxx 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/dmcnews Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/