What is the glow plug symbol on a diesel engine?
What is the glow plug symbol on a diesel engine? This is the Glow Plug Indicator symbol, which is found only in diesel-powered vehicles, sedans or trucks. Diesel engines require heat in the cylinders to operate, which is supplied initially by glow plugs when the engine is cold. Why is the glow plug on cylinder 4 not working? This intense heat is quickly transferred to the cylinder head which allows the heat of combustion to maintain its heat for the fraction of a second it takes to ignite the incoming fuel for starting. The code P0674 tells you that something...