4.0lsupercharger 1996 Its is putting too much fuel in when starting and ilde if the car is cold it will not start if you take the plugs out and dry them with a heat gun it sill does not always start You try for about 30 secs take a plug back out and its weat . if it does start, it mostly does if the cars inside and warm it ildes a bit lumpy and you can see a little black smoke out the back. it drives ok when it goes.

Is there a sencer that is telling the ecu to put more fuel in ?

someone most know what to do please help

Mark

 

Before replacing sensors, get the car scanned in real time and read out the sensor values. If one is bad, it should show up then. The main sensors for mixture are the mass airflow and oxygen sensors.