I am in the same boat with you man. I just bought an 88 Nissan Pulsar for $100. It didn't start, so I thought it would be an easy fix. After replacing the radiator, and head gasket, it started up on the first try. I timed it, and the thing purred. I took it for a test spin, and when I got back I shut it off, and then tried to start it up again. No luck. It sounds like it is drowning. So, I figured the choke is stuck, or the floats in the carberator were not working properly. I went to good ol Wal Mart to buy some Carb Cleaner, and that seems to not be doing the trick. So, my next step is to pull the carb apart and see what is going on in there. It sounds like to me you may be having the same problem unless your fuel injected. In that case you maybe filling up that combustion chamber with fuel. If it runs fine, and has problems starting after you turn it off, then your car is being sufficated somehow. You need to find out why your injectors or floats are not stopping the fuel from running into the chamber. That is basically where the problem is. I have read in the forum from similar situations, and people seem to claim it is a sensor of some sort. I think that is all a bunch of b/s since nobody's replying back saying that fixed the problem. Oh well, what do I know. I bought a stinking Pulsar. lol.