Passenger side bank is running very lean (gets hot very fast).
At first i thought it was maybe an internal vacuum leak from the intake manifold. I did the finger over both the pcv hole and the breather on the other side... it had a bit of vacuum. so i figured that was probably it.... took it apart and replaced the gasket and what do you know, it didnt fix the problem and the vacuum is still the same. before i had did all that work i tried a couple things to see if they helped and heres a few...I pinched the return line to see if maybe i wasnt getting enough fuel on that side somehow, didnt do anything. all injectors checked out just fine along with injector bank fuses. starting voltage testing the injector wires.. this always confuses me. passenger side gets 12v on both wires with key on and ecm in as does the drivers side. with the ecm out the passenger side gets 12v on each wire while the driver side gets 0v on either wire. ohming the passenger side i get 15ohms on one wire and 21ohms on the other. driver side i get nothing. the driver side plugs are golden and look great while the passenger side plugs show lean fauling.

at this point im at a loss of ideas... if someone could maybe refresh me on how to properly voltage and ohm test my injector wires that could help, and also any other ideas of why this passenger bank is running so lean.

Thanks

 

*** i compared plugs and driver side looks great, passenger side is lean fouled *** i compression tested the 3 cylinders on the passenger side, they were all fine. i couldnt get the 4th because i have headers and the space is to tight. that same cylinder just recently burned a plug wire right before i had this problem. i put new plugs back in and also replaced the burnt plug wire... still no change. Ive vacuum tested with starter fluid and also checked the egr valve... it seemed to be fine. A new fuel pressure regulator was installed about 4 months ago. My appologies for the random thought entries but im at work trying to get this posted fast with everything i can remember about it.

This whole problem started after i took off from a stop sign, hitting about 4k rpms and then the motor just took a crap on me and wouldnt rev past 2.5k. Its like the computer is not letting the distributor advance now and or the knock sensor is picking up a knock and retarding the timing. im not sure if the passenger bank is running lean because of this or what but the computer is not putting any codes. any ideas? Once again you will have to excuse my grammar and such.
Thanks for reading

 

what year is your vette ? miles ?

How did you retrieve the error codes ? It sounds like a faulty O2 sensor that is continually feeding back a rich condition( >0.5V) on the bank that is running lean.

To check your injectors, unplug the harness, measure resistance between the two terminal leads on the injector. they should all be very close in measurements. Do this when engine is cold, and again after engine is hot.