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#18: 01-17-2010, 09:56 AM
timmafod's Avatar
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Location: Central NJ
Car: 05 OB XT 5MT & '92 Miata 2.5V6T AEM EMS
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Originally Posted by sleepermaxima View Post
Sorry to hear about that. What a mess.

I didn't pay a cent for the repair since the dealership owner stepped up and footed the entire bill. Had I not been so lucky it would have cost me somewhere around $2K to fix.

Unless you already know for sure its a burnt valve, before you yank the motor, do a leak down test... or at least put some air pressure in the cylinder while it's at TDC on the compression stroke. Then while there is air pressure in the cylinder, put rubber gloves over the tail pipes and wait to see if they inflate within 10 seconds or so. If they inflate quickly, you most likely have a bad exhaust valve.

Good luck and keep me posted.
Yeah we tried that, cyl 2 at TDC on compression stroke, air leaks out the tail pipe. Fun!