So i already installed my set of used injectors and i was looking at some pics and something caught my attention. Do i need O'rings for the nozzle(outlet side) I have 1a and 2b done but left the last one, is it necessary??




taken from the Greddy the manual =

１１．Injectors（S2000 Use only 550cc×4、O-ring Large×8、O-ring Small×4、Spacer×5） １ｓｅｔ

１２．Injector Harness ４

 

check them visually to see if there are any cracks or marks. another way to check is to see if the rubber elasticity is still there and making sure its not hard like a rock

 

You definitely need them if they are missing, but if you have them and they are just used then like Toga said above ^.

 

I installed them without one, at this point i do not know what size to look for. Would they be the same as the top ones?? Do i need a special one or can i get them at Lowes/Home Depot and use them?? What would happen if i didnt have them on(just askin)??

 

It wont be sealed and will leak. You can get these o rings at any autozone or other parts store. They are pretty cheap.. I bought some for my DSM not to long ago think they ran me 6 bucks?