ngk marine spark plug chart

While the ones intended for standard ignition are stepped from .025- to 0.45-thousandths of an inch. Because we want you to check your spark plugs at least annually, we did not include the symptoms of fouled spark plugs at the beginning of the article. Please view the application guide below. , French America's Definitive Marine Engine Magazine, A detailed call-out of the many components of a sparkplug. But also check for over advanced ignition timing to rule out that malady. The NGK BR5HS Spark Plug is a standard NGK plug. Part# NGK STK # NGK # Comp. Products. NGK NTK Technical Training The NGK DCPR8E Spark Plug is a standard NGK plug. DPR5EA-9 is the part number and 2887 is the stock number. Saturday & Sunday: 11:00AM3:00PM. Welcome to our Part Finder! This can be caused by a dirty air filter, excessive driving at low speeds, too rich of a fuel/air mixture or idling your vehicle for too long.