#3 not firing, Injector or what? Options

[kkid]

So I sent my injectors to the reputable injector guru and got them back within 2 weeks then installed. The car ran very well before the cleaning but ran happier with the serviced injectors (IMG:style_emoticons/default/cheer.gif)

But after about 40 or so miles, #3 cylinder stopped firing (IMG:style_emoticons/default/hissyfit.gif) The plug in the #3 cylinder got sooty and there was unburnt gas in the right bank of the HE. Other 3 plugs look good. I wonder if the recently serviced injector has failed or something else has gone bad (IMG:style_emoticons/default/confused24.gif)

The car runs OK only about 5 min. if the plug is cleaned, then starts to reduce power with gas smell and frequent popping along with acceleration. I also noticed the motor does not want to rev up high when this happens.

What could be the reasons to misfire beside a failed injector? Please list.

Thanks in advance (IMG:style_emoticons/default/pray.gif)

[SLITS]

The solenoid is not closing (injector stuck open) and the fuel pressure is pouring gas into the cylinder drowning out the spark with liquid.

The return spring could have broken.

Replace the injector .......

Possibility of a bad high tension lead (spark plug wire) not firing the plug also.

Possiblity of bad Beru connector ... cracked ... spark going to ground.

Possiblitity of a bad spark plug ... juice going to ground ... cracked center electrode insulator, etc ..........

Possibility of a cracked distributor cap or dirty inside causing arc to travel to ground rather that cap electrode .......