How do I check to see if an injector is stuck again? It was something like put ignition to on, depress accelerator pedal all the way and turn the key. If injector was stuck it would start and if not it will just crank. Can someone tell me what the sequence was again?

My truck is running so rich its putting gas out of the exhaust pipe. Ordered a new O2 sensor since only $20 with coupon on amazon right now for a bosch. Want to check injectors. Might be ECM?

1994 f350 351 5.8 w/ c6 tranny.

 

The test for leaking injectors is to first pull the dipstick out and smell it, if it smells of gas your cylinders are getting too much fuel. Next to determine if it is a single injector or something global, so pull the plugs to see if you find a single that is wet and/or black or if they are all wet, a single means that injector alone is stuck open but if they are all wet then you could have several different problems. Pull codes to see if anything is flagged, then pull the vacuum line off the pressure regulator to see if there is any fuel in it. There should not be so if you do find gas replace the regulator. If the regulator is fine then something should be flagged by the computer, if you don't get codes that are real specific try changing the MAP sensor, that has the biggest impact on fueling along with the O2 sensor. But also if you can't get the computer to dump any codes at all then it is suspect so consider pulling it out to check for exploded capacitors and maybe replace it anyway.