Just had valve seals replaced next day engine light with catalytic converter failure. No issue before repair. BMW certified mechanic stated h was having trouble with machine shop installing wrong part or parts. My question is if they fired up the car with wrong valve seals installed and caused an oil leak or pass thru in the engine could this have damaged the catalytic converter? Mechanic stated it probably was bad before the repair was made? However no engine light had ever come on. Any way to prove that they may have caused the damage
have the same problem?
Monday, October 21st, 2013 AT 7:46 PM