agustincorrea

Hi My Mechanic changed the back Coils on a 2007 Maxima and now my car makes a noise like muffler or Valve noise only when I put more power to the engine. I never changed the Intake Plenum gasket and not sure if the noise comes from a leak from the intake plenum?

Also car engines jerks a litttle when I almost stopped and then when I star rolling it does it and goes away. When the engine is at normal Temp it will not happen.

Any thoughts?