| unplug each ignition coil one at a time, if the engine speed drops that cylinder is ok, if the engine speed does not change then that is your problem cylinder Turn the motor off Pull the spark plug and coil from the problem cylinder and temporarily install a spare spark plug in it's place (to avoid obnoxious pulses from the cylinder) Attach the coil to the problem cylinder's spark plug and ground the spark plug Turn the engine on- if it sparks: the problem is the injector or the seal between the injector and fuel rail. To be sure, measure the injector's resistance, if it is correct you can try applying 12v to the injector and listening for a click. If it clicks chances are good it is a leaky O-ring, if it doesn't then the injector may be stuck open.
*disclaimer*: all that I say may be true or I may be completely wrong and I accept that.... please, it is your duty as another person on the internet to in-politely tell me how wrong I am :) "The dreaded 2nd windshiled wiper swipe when you turn it off its almost like tis showing you that it's boss, and it doesn't have to stop when you tell it to :("-College Boy (discussion on ptu relocation)
"No good reason to put it there anyway. -Bernie (NoVA)
False -vorpalZ
False. -Bernie (NoVA)
You're correct, there are 3 good reasons -vorpalZ
False. -Bernie (NoVA)
Wow, right again, just remembered another, make that 4 -vorpalZ"
XD 
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