Is carbon buildup on intake valves a related issue in direct injection engines that can indirectly affect spark plugs?

Jan 29, 2022 ... While they do have a lot of carbon on them; I doubt ... You need to determine whether its spark or fuel that is causing it not to start. 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 ... Oct 12, 2021 ... If the black soot is 'dry', it's a fuel-rich condition in the absence of (significant amounts of) oil entering into the cylinder. Apr 28, 2011 ... In theory it is possible for it to be your plugs, although if you have bad plugs, usually it won't even start at all. That is just been my ... Please see pic of my carbon-fouled spark plugs just taken out today ... The only two things I know of that will cause fouling like that are overly rich fuel ... 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 ... Aug 15, 2006 ... ... causing carbon fouling is your air filter clean and free of oil? If its in bad shape it could be restricting air flow enought to leave your ... Apr 8, 2013 ... The resistors are there to supress radio frequency interference, which can cause the TCI to malfunction (weak spark, mis-timed spark), or even ... May 31, 2011 ... The carb is new out of the box and it was making all the plugs black carbon. ... dont use the old lead fuel pic s of spark plugs to read ... Apr 1, 2022 ... Carbon fouling on a spark plug is caused by a problem with the fuel that you use. Often, we describe it as a fuel mixture that's too rich, which ...