Reading Spark Plug. Web how tos, ignition & electrical, tech reading 101: You can use the burn color of your plugs and reference the plug color charts below to determine if your engine is running rich or lean.
Reading spark plugs Saturn ION RedLine Forums
Check for faulty or sticking choke, overly rich fuel mixture, ignition problems, leaking fuel injectors, or spark plug heat range is too cold. This is because a spark plug can be a great indicator of what’s going on inside the engine’s combustion chamber. In general, a light tan/gray color tells you that, the spark plug is operating, at optimum temperature. Is your engine running too lean? Geared towards motorcycles but very good info here. Most often, a light tan color around the tip of the spark plug indicates a healthy and well performing engine. But no matter how exotic or mundane, all cars still use spark plugs. This condition is ideal, the spark plug and engine air/fuel mixture are operating properly. Web indicates the cylinder from which the spark plug came is not using all the fuel supplied to it. This is because they're one of the first places to look when there’s a problem with drivability.
It can indicate if there’s a rich or lean air fuel ratio. The porcelain is the insulator between the center electrode and the spark plug housing. Being able to “read” a spark plug can be a valuable tuning aid. Web indicates the cylinder from which the spark plug came is not using all the fuel supplied to it. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. With modern unleaded gasoline that is identified as reformulated, you may see a light gray color. Web a tech article on testing and reading your spark plugs. Check for faulty or sticking choke, overly rich fuel mixture, ignition problems, leaking fuel injectors, or spark plug heat range is too cold. Web 1.2m views 3 years ago. Both the fuel mixture and the ignition timing result in coloring of the spark plug's porcelain and ground. But no matter how exotic or mundane, all cars still use spark plugs.
