While many spark plug failures stem from improperly applying torque to the plugs when they are installed, there are a variety of reasons why they may fail.
In his feature article in our sister publication, Underhood Service, Technical Editor Brendan Baker discusses how some applications are more challenging to remove spark plugs than others. He demonstrates his diagnosis of a 2011 BMW X5 in this latest article.
Click HERE to read Brendan’s article.