If you suspect an injector issue (and it looks that way from your pic), I'd act sooner than later. I've dealt with quite a few cars lately that have come in almost hydro-locked from fuel due to a leaking injector. Most of them have been later cars -- 2009-2011.
The last 2 I fixed actually had raw fuel dripping out of the turbo/downpipe area. Pretty scary to think about what this can do to your cats (if you have cats) or other engine parts.