Originally Posted by 335dM
They don't want the tech to clean it and risking damaging the port using high speed dremmel or using abrasive product or thinner or anything similar to the head! So they asked to just replace it then send it to the an engine power plant where they have the right knowledge to clean it properly!
There is your answer
That makes sense- the refurbished part can then be used later. Thanks for the insight.