i just bought a 1990 4runner the guy who owned it prev cracked the thermostat housing so i fixed that and got a new radiator hose and new spark plugs when i went to go turn it on it turns over but doesn't catch then fuel pours out the muffler and the engine was filled with gas
its a 3.0l v6 with 260k on it

 

Have you done any trouble shooting? Spark? Compression Test?

My first reaction to your headline was "because you have a V10 Ford?"

 

yes last nite i checked the spark and it was yellow and very weak but it was sparking and i also did a compression check and it was good

 

Well sounds like its flooding something fierce. I would figure out why you have weak spark. Considering the age of the vehicle and being new to you, I would start by replacing the plugs wires cap and rotor.

Did the vehicle run when you first got it?

Next thing I would do is check it for codes and report back here!

 

maybe the cold start injector is stuck open/not functioning properly

 

That happened to me about a year ago. Filled my entire manifold up with fuel. Did it to me twice and then never again. I hate intermetant problems. Not quite sure why Toyota added a seperate injector for cold start when making the other ones richer till warm would work.

 

turns it was flooded and we also found water in the 6th cylinder any1 got a cheap engine to sell me