Carbon can’t accumulate in an EGR valve in a short time, unless there is something horribly wrong with the engine, which you would know, because the car would be nearly impossible to drive.
You need a new mechanic.
Carbon can’t accumulate in an EGR valve in a short time, unless there is something horribly wrong with the engine, which you would know, because the car would be nearly impossible to drive.
You need a new mechanic.