Can a clogged PCV valve contribute to carbon fouling?

Sep 25, 2006 ... The Boating Forum - What causes a fouled spark plug?? - I have a 2003 Yamaha 130hp. One of the plugs has a wet tip with carbon build up. Carbon-fouled. Ash-fouling. Ferrocene. Oil-fouled. Partially melted center ... Cause: Spark-plug replacement interval not complied with. Effect: Misfiring ... May 23, 2022 ... ... spark plugs, they foul badly with black carbon after only 20 ... fouling, I was hoping to rule out the original Strombergs causing the issue. Jan 31, 2020 ... Gentlemen, I have a sooty, carbon-fouled spark plug problem that I ... carbon building up on the exhaust valves causing them to leak. 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 ... Sep 1, 2014 ... You're not doing your engine any favors like that. Smell, smell is unburned fuel mix coming out the exhaust. this is caused by mis-fire. put a ... 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 ... Sep 26, 2022 ... Carbon Fouled Spark Plug – Find Causes & Solutions · A dirty air filter · Faulty fuel injector · Too rich air mixture · Failed oxygen sensor. Mar 18, 2020 ... My question is, can this oil consumption cause this bad of spark plugs within about 10K miles or is there other issues that I need to be looking ... 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.