I swapped the head on my '92 in '05 with a revised head I had sent out for work.
I had a manifold leak on the intake between 3 and 4. I let the engine idle and sprayed some throttlebody cleaner around the manifold's flange to find the leak. The rpms at idle increased when the cleaner was sucked in. It turned out that the manifold I had powdercoated had a small lip from the coating and it wasn't making a correct seal. If your thermistor (the green sensor at the back of the head) isn't working properly, your ECU (if stock) should throw a code. I bought new ARP head studs when I did my work. The oem bolts leave much to be desired. The studs make locating the head properly very simple. Have you done a compression test? Regards, Steven -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brad Franks Sent: Wednesday, May 21, 2008 11:45 AM To: [EMAIL PROTECTED] Cc: Bill Cardell; [email protected] Subject: Re: Problems persist - diagnosis may be worse than the head gasket Something else just occurred to me. I re-used the intake manifold gasket. It was thin, flimsy and the paint was flaking off of it. What if it is not sealing properly between the head and the intake manifold and coolant is passing from that blocked off passage between #3 and #4 into one of the intake runners. I suppose checking the plugs after the cold start might indicate this, particulary on #3 and #4... I could get extremely lucky and potentially fix this by using some permatex in lieu of the gasket, presuming the head and manifold are flat enough. A reasonable thing to consider? _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
