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 of 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