This is a tricky diagnosis because I don't really know how to describe the noise I am having. From 2500-3000 rpm the power drops a little and a noise that sounds like ignition ping, but faster
. Over 3,000 it pulls like normal again and the noise is gone. With gas prices I would really prefer to stay below 3000 in normal conditions, and 2500 isn't working out the best. The noise happens EVERY time in this range and either warm or cold. Below is a list of new items, this problem occured before and after the changes.
New plugs and wires
Two of the plugs had a fair amount of crud (medium brown, not oil) built up, the rest looked like new. Any ideas are welcome!