What would cause this?
I had a tune up done in January. A valve cover
gasket was also replaced. Yesterday the check
engine light came on after I turned my traction
control off and back on. I took the car back to the
place that did the tune up and the mechanic said
that the thing in the picture was cracked and two of
the four coil things weren’t working properly.
What would cause this to crack and wouldn’t it
have been noticed that those pieces weren’t
working during the tuneup?
