Engine Optimization 101 The Importance of Fixing Fouled Spark Plugs

A fouled plug causes a misfire. You'd be running on 5 cylinders if you had a fouled plug. If you have fouled plugs, or just one fouled plug, you ... Problems with the ignition system, fuel system, emissions system and overall engine condition, may lead to misfire. Carbon Fouled Spark Plug Ignition system ... Is your spark plug misfiring? It may be a result of fouling. This video describes the various factors leading to a fouled spark plug. The answer to this question could vary. A plug may be "fouled" for more that one reason. If it is saturated with raw fuel, the cleaning methods ... There are reports which stated that higher spark plug fouling is due to carbon deposition on the spark plug electrodes on a two-stroke engine ... Is it the oil? The gas? or the coolant? Spark plugs can be the “canary in the coal mine” for underlying engine issues. You can clean them yourself by running the engine up to 2000 rpm, lean for a slight rpm drop, hold it there for 20 seconds, and check again. Yes they will clean themselves up a little bit however not that much if they're really dirty they're not going to clean themselves up. Try clearing the plugs by running your engine up to 2000 RPM on both mags leaning to about 50 RPM lean of peak. The black and white deposits are sure signs of oil fouling, as is the pinging. You've probably broken a second ring, or else the oil ring is just plain worn ...