When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
What does it mean if you find what looks like white-greyish carbon on the plug? That and i noticed black on the threads. I just changed my plug wires from beleive it or not the original ones, to Accel 8.8 wires. I have Bosh platnium not sure of the number. What brands are better i always used the champion gold in my 72 camaro and liked them. I was thinking NGK or Splitfires. Thanks for your help.
Dry soot deposits indicate a rich mixture or weak ignition. Causes misfiring, hard starting, and hesitation.
Make sure the plug has the correct heat range. Check for a clogged air filter or problem in the fuel system or engine management system. Also check for ignition system problems.