[Scrapla]

The caps I have no clue, at the bottom of each injector there are top hats that snap on which come inside the injector rebuild kit which I found at NAPA you need one for each injector or they have just the O ring sets which you need 2 sets (16 rings). Mine are leaking the same as you described and I just removed the fuel rail today and all injectors and gave them a good cleaning installed new ring tops and still have some leaking im thinkin there dirty and clogged and its pushin fuel back up so maybe look into some used injectors maybe outta a scrap car.