Can an issue with the ignition system cause carbon fouling?

Jul 10, 2003 ... Dry black carbon deposits could be an indication of a rich mixture ... More than a quart in 1000 miles is cause for concern in my book. 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 ... Sep 26, 2022 ... Carbon Fouled Spark Plug – Find Causes & Solutions · A dirty air filter · Faulty fuel injector · Too rich air mixture · Failed oxygen sensor. 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. May 30, 2014 ... ... plug solid with dirt causing a rich running condition fouling the plug. ... 2005 EZ GO ST fouled spark plugs, Gas EZGO. carbon fouled plug, Gas ... Mar 20, 2023 ... ... cause... The ... I would not make any change to jetting based on a random look at a spark plug. Yes, there is some carbon on the plug ... Feb 10, 2025 ... If the spark plugs have a matte black or grey appearance, it could be carbon fouling — something typically caused by a fuel mixture that is too ... It has a Crane HI-6 ignition and MSD Dist." Well, if it's fouling plugs, (assuming the fouling is from gasoline and not oil, such as caused by bad rings or ... Seems to be where it wants to run but plugs still foul (dark black carbon). Jets appear to respond to the lean/rich process and I think they are where they ... Nov 30, 2003 ... ... cause problems unless the spark plugs begin to foul out. In any event you would notice the misfire and lack of power from fouled plugs. As ...