ENGINE MISSING ON ONE CYLINDER

[Topless]

Hi all my engine sometimes desides to miss on one cylinder and this may be the case for a while ..could be 10 miles...then it clears and runs like a dream. could it be a blockage on a injector or a faulty ht lead or a faulty spark plug or something else?

[Raymond]

When it's doing that, does the miss go away with higher revs?  I was having that issue and just pulled all of the injectors.  Two of them, and their matching spark plugs had a lot of dark carbon deposits.  I'm wondering if that means it's time for new injectors.