How many bolts are on 92 Geo Metro manual crank shaft?

There are a lot of reasons why an engine might not start. You may need to be a bit more specific in your question. I also don't know your technical expertise level. But here are some obvious places...

Your heater core may have gone out. Or you could have build-up in the lines.

With the proper tools and the correct torque.

I get 44mpg city & 50 hwy on my 1995 Geo Metro, 4 cyl.

Yes you can put AC in a Metro but I don't recommend it. My Metro has AC but if you do put it in it will slow your car down horridly and it will cause your high MPG Metro to drop down to that of a...