I am hoping someone here could point me in the right direction. I have a 93 4Runner with the 3.0 V6 motor that has a strange problem that is absolutely driving me bananas.

When the engine is cold, the motor starts right up. When the engine is warm/hot the motor just turns over and over and over and struggles to fire up - it acts almost as if the engine is "flooded", but with fuel-injection I didn't think this was possible - Someone at work mentioned vapor lock might be a possibility - Anyone have any ideas as to what is going on?

Thanks in advance.

Frank

 

http://www.ncttora.com/fsm/1993/engine/88coldstar.pdf

Look at the info here. Sounds like the cold start injector is injecting whether it needs to or not.