Yet again one of my injectors are leaking. I changed around injectors took the o ring off then back on and it was good fora while but now it's leaking again. Ihave a set of complete o rings for the whole injector. If i change all the o rings on it and it still doesnt work Im going to try to just change my whole intake manifold since i did get a new one wit the engine swap and all. Now do you think before I change the intake manifold I should change the fuel pressure regulator? could that cause only one injector to leak or all would leak?

No. Just replace the manifold.

O-rings shouldn't be reused once taken off. When you put them on and put the injector back on the o-ring pinches into a groove. removing it and put it back on ya might not have the same groove


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