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I'm driving along and come to a stop sign. I look in my rear-view and I discover the car behind me is in a dense cloud of white smoke. My temperature guage is reading normal right now, so I don't bother stopping and checking, since my house wasn't too far away. I pull into the driveway and by now the temperature guage is starting to show overheating. I check the tail-pipe, white smoke still coming out. I open the hood and the coolant tank is foaming antifreeze, so I quickly shut the car off.
Next day, I check the spark plugs (having read somewhere on this BB that a blown headgasket will clean the sparkplugs in the bad cylinders), and 3 of the spark plugs show nothing out of the ordinary (not clean, white-grey residue), but the 4th cylinder (err, maybe the 1st, the one closest to the firewall) is black from oil. After adding coolant back to normal level, I try to start the car and the engine appears to be siezed up. I play with some stuff, and keep trying to start it and sooner or later it "un-siezes" and idles for a couple of seconds then stalls. I try to start it again, and I can hear it fire a couple of times, but it won't start. Now all I hear when I try to start it is just the engine turning over, no combustion.
My best guess is the headgasket. The transmission needs work anyways, but I do not know now if the engine was severly damaged during the incident. Can pieces of the headgasket damage the cylinders/pistons/valves/etc. inside the engine? What caused the engine to sieze up? Shouldn't the spark plugs show something regarding the coolant leaking into the cylinders?
1989 900T 178,000 mi
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