Hi: This is my second message to this board. After shutting the engine off, after 20 minutes, it is impossible to restart my car... I have to wait until it cools down completely. I have checked the electric circuitry, all wires / igniter / distributor are ok. I have changed the fuel pressure valve, since we thought we had vapor block.

I am running out of ideas. If fuel and sparks are all right... what is missing? Air? Is there a special air source I have to check that may run or not when the motor is hot? Can I still have vapor block in the gas conduit coming from the tank?

Any ideas?

Thank you very much for your replies.

Hi: after trying everything, and reading that plenty of people with similar problems finished by selling the car, I guess I found it...

During some period of time I have used Shell gasoline for my van. I saw some reports that tell that there is an additive used by this company that may affect all gas circuit, including tank, pump and injectors. This could be the only common thing that could affect all 6 injectors!!

Well, a 9 buks bottle of "clean all" (these additives you buy in any store) did the trick.