I've driven this car 500 miles now trying to get use to any noise it is or will make after seating for 12 yrs. Initially I thought it was the valve cover gasket that was leaking, I sprayed the area with white gas so it will dry everything and revealed where the leak is coming from. After all the miles I put on, the leak is coming around the injector area. The injector seem to have some insert where it threaded into.

Can someone educate me how these injectors are installed on the head? If I remove the injector, the insert I am referring to, will that come out also having the right tool to unscrew it?

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