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Originally Posted by Dejvid1785
I have a 88 NA supra, i'm trying to figure out if my thermostat is out or is my head gasket blown? What usually happens or what symptoms there are when your head gasket is blown?
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Try to take out the old thermostat and punch out the insides of it and then replace it. Then you will know that it is not your thermostat.
Does your car use up any water? If so, and it probably does, then it could be your head gasket. I blew two head gaskets, on two different engines in the past year. You need to check your distributor!!! That is what caused both of my engines to blow. There are three different modules in the inside of the distributor that you need to check. You can test them in a few minutes, with a meter. I used my old distributor in the new engine I bought, which was a big mistake. I do not want you to make the same one. My car was smoking and burning oil. Also, when I checked the timing on my car, it was fine. But, when I advanced the engine, the timing went off the chart. This was do to two of the modules in the distributor going bad. A new distributor is only $256.00, from Toyota. Let me know if this helped you. David