a lenyeg roviden, hogy gyujtasproblema/gyujtaskimaradas, ilyesmi

A flashing check engine light usually refers to cylinder misfiring. Misfiring should be investigated and resolved promptly - that’s why the light flashes versus simply staying steady - because misfiring can damage the catalytic converter which can result in additional costly repairs. There are a variety of causes of misfiring and some are mundane such as old worn out spark plugs.