Hello,
If this has been discussed here previously, I apologize for the repetitive post. I have a '03 GMC Sierra 1500HD with the 6.0L. I was replacing spark plugs on it and what I pulled out was AC Delco 41-110 gapped to (and the owners manual agrees) to 0.060". These are iridium plugs I believe. I was given AC Delco 41-962 double platinum gapped at 0.040". I found some information saying GM "updated" things and this is the acceptable replacement and new gap for it. I have heard due to the delicacy of the plugs, not to change the gap, but I did anyway. It ran good with the larger gap so it seemed reasonable to leave it that way. I used the tool that bends the ground strap and did so very carefully. I do not believe any damage was caused. The truck seems to run good now as it should, the plugs were not that old and had low miles on them.
Did I do anything wrong changing the gap? Should I try to find the older 41-110 plugs and switch back? Am I overthinking this too much?
Thank you all.
If this has been discussed here previously, I apologize for the repetitive post. I have a '03 GMC Sierra 1500HD with the 6.0L. I was replacing spark plugs on it and what I pulled out was AC Delco 41-110 gapped to (and the owners manual agrees) to 0.060". These are iridium plugs I believe. I was given AC Delco 41-962 double platinum gapped at 0.040". I found some information saying GM "updated" things and this is the acceptable replacement and new gap for it. I have heard due to the delicacy of the plugs, not to change the gap, but I did anyway. It ran good with the larger gap so it seemed reasonable to leave it that way. I used the tool that bends the ground strap and did so very carefully. I do not believe any damage was caused. The truck seems to run good now as it should, the plugs were not that old and had low miles on them.
Did I do anything wrong changing the gap? Should I try to find the older 41-110 plugs and switch back? Am I overthinking this too much?
Thank you all.