Running rich on right bank.

[twcblackhand6970]

I was just monitoring my car's BLMs because I just got my madz28 tuned pcm in and saw that while using pcmcomm my right BLMs were at 108 and my left was at 12X and but my right and left DEL values were at 124-122. I'm guessing one is the L and one is the S term, but I'm not sure which. Just curious I looked under my hood to listen because prior to the tune, I could hear A LOT of rocker noise with stock rockers, now it seems to be a lot quiter, not sure why. Anyways, while I was under there looking at the left side of the motor, I saw my number 1 cylinder arc every couple of seconds, I'd say once or twice in 10 seconds. So I looked at the right to see how that side was and man, fricken fourth of july. The back left one (#8 i think and the #4 cylinder have arcing every cycle it seems, constant lighting up. The arc looks like it is inside the cylinder because its coming from the base of the plug that is visible. The plugs and plug wires are brand new, less that 1000miles on them. I'm going to take them all out tomrrow and see what is going on. My questions are could the right side be richer because they plugs are arcing so much worse on that side and what could be causing my plugs to arc? Could a miss gapped plug make them arc? And finally what is the best gap to use?

[Fastbird]

My questions are could the right side be richer because they plugs are arcing so much worse on that side and what could be causing my plugs to arc? Could a miss gapped plug make them arc? And finally what is the best gap to use?

In answer to your first question, YES, the arcing is most likely what's causing the right side to show richer than the left.

A missed gap could cause an arc, defective wires, but also, the spark will take the path of least resistance, so you could be having fuel or oil leaking issues on the rigth bank too. You'll have to do some real troubleshooting to narrow everything down on this, but you're starting out on the right track.

[FICINJECTORS]

Gap would do it, but also try ohm testing your injectors, if 1 is stuck on that side, you will go very very rich.

Test them hot and cold.
YouTube - HOW TO OHM CHECK A FUEL INJECTOR

[twcblackhand6970]

just took out all the plugs and regapped them to .045, while i was there i saw the plugs were all kinda brown on the tips but black on the circle edge that's inside the cylinder. also one or two of the plugs looked kind of white/grey on the tip.

[twcblackhand6970]

Here's a run I did after I replaced the right o2 sensor.
http://fb.esnips.com/doc/552d5707-53...aftero2replace (http://fb.esnips.com/doc/552d5707-5346-4b08-8a33-99b1a705476f/94zaftero2replace)

[twcblackhand6970]

any body?