HI, I am still having a little trouble out of my car on a cold start. I can put brand new plugs in it, start and drive it and it will run and start fine all day long. After it sits over night I will try to start it and then it fouls the plugs. I put a fuel guage on it and the fuel pressure drops slowly. No fuel is coming out of the vacumm line on the FPR. I also tried my stock injector and the same problem occurred. I have had the car dyno tuned and when it left it was doing fine. I also noticed that the guys that dyno tuned it left the IAT unplugged and I plugged it back up when we got back but dont know it that would cause the problem? I am smelling gas in the oil too. Will a leaky injector foul all the plugs?

thanks
Josh

 

anybody?

 

If its fouling ALL the plugs, its running excessively rich (or you have plugs that are too cold). Have you checked the coolant temp sensor reading?

 

thanks injuneer, I am running the ngk TR 55 and I bought a new sensor when I bought a new waterpump. Also I am considering buying a scan master but dont know anything about them. I just dont want to start replacing parts.

thanks
Josh