Well I've already posted it in the maintenance forum but since nobody answered i've decided to try here.

Well i'm not very good in english but i'll do my best. When my car is cold and I'm speeding it as soon as i let the throttle off the engine drops to like 500RPM and sometimes it completely shut down. I've seen that I've got a leak from my injector number 2 can it be the injector leak that cause my problem? I've already replaced my injectors O-ring so should I buy an injectors or i should look for a used intake manifold ?

Thanks a lot
Max