What are some safety precautions to take when working on your vehicle's engine?

Jun 23, 2009 ... Carbon fouling is caused by weak spark, wrong plug heat range, and rich conditions. Essentially, you're burning too cool. Need to heat things up a bit. May 10, 2023 ... Yes - had it (and not running due spark plug) a number of times on motorcycles. Sometimes the original will work fine once started with a ... Is there something else that could be causing this rich burn fouling of the plugs?? ... Do you have carbon fouling (dry black soot on plug) or is it oil on ... Jun 5, 2024 ... Since all four plugs are fouled, I would lean towards oil. You may have lost a seal on the turbo, or the new PCV diaphragm may be faulty. Sep 8, 2020 ... A YouTube guru on the Nissan VG33 said this plug is more prone to fouling because the oil pools up more in this part of the head due to a flawed ... It only took one change of spark plugs about 30 hours ago. Some ... A "weakness" in the ignition system will cause cause either a comeplete shut ... May 12, 2006 ... ... carbon, fuel, oil or other deposits; Will cause spark to leach to metal shell...no spark across plug gap will cause a misfire; Wet-fouled ... Jun 13, 2023 ... I have 1 cylinder in my 1970 440 that carbon fouls, almost positive its a valve issue. All other plugs still look great. (Bosch Platinums). Apr 29, 2012 ... Thanks Jim. I'll check the air control cable. That sounds like a likely cause. There seemed to be good tension at the lever but of course that ... Jun 6, 2011 ... Usually fouling is caused by too rich a mixture or weak spark, afaik. I think getting the right adjustments on the carbs, ensuring the proper amount of spark.