Spark Plug Savvy A Step-by-Step Guide to Diagnosing and Replacing Fouled Plugs

But if your engine floods or you have misfire issues that prevent your car from running correctly, the spark plugs might be fouled well before you reach that ... Aging spark plugs will cause abnormal engine vibration. Pay attention to replacing them after using them for a long time#driving # ... Re: Fouled spark plugs ... Too often, people fret over the appearance of plugs. Don't worry about your plugs as long as the engine performs well. Here is the Complete Guide on Spark Plug Fouling Diagnostics: A fouled or bad spark plug is a plug that has become covered with a substance like oil,... Soft, black, sooty dry deposits on plug indicate carbon fouling. Carbon fouling is an indication of a rich air-fuel mixture, weak ignition, or improper heat ... Spark plug fouling is a phenomenon in which spark plugs accumulate a layer of debris -- typically soot-like carbon. While available in different ... Internal coolant leaks can foul a spark plug and cause a misfire. The problem could be a leaking intake manifold or a head gasket, and the ... Make sure you check the spacing on your plugs in addition to checking to make sure they're not covered in oil or dirty in general. This rule ... Some of them had some white residue on the diodes. I think thats normal, or could be from putting seafoam and injector cleaner through it a couple times. The piston first travels down the cylinder, drawing in a mixture of fuel and air. The piston then goes back up towards the spark plug, ...