You may have the plugs wires installed incorrectly. You also may have the plugs gapped wrong. Here is the correct wiring order. Copy & paste into your browser.
http://autorepair.about.com/library/firing_orders/bl-fo-8938.htm
also after market spark plugs are NOT the same as factory spark plugs. always go with the brand that the factory installed for the best street performance and to avoid unwanted headaches, for instance my truck came with ac delco cr43ts , i installed autolite 25 that was given by the parts store. the truck absolutely refused to run right from the moment i started it after installing the new plugs. it was missing on nearly every cylinder. i returned the plugs and got the factory cr43ts plug, installed them, purred like a kitten. THE POINT IS , ITS NOT ALWAYS YOUR FAULT.
spark plugs need changing- ignition wires could be changed- put octane boost into your gas, or fuel injection cleaner.
Yes
People who have constipation often say their bowels are sluggish.Having worked overtime, he felt sluggish the next day.An engine with old oil can cause a sluggish running car.
Could be the TPS, it will cause it to idle high and low and make the car become sluggish, but a vehicle will run without one, but it will run very rough.
A bad fuel injector.
Many things can cause a car to be sluggish like dirty air filter, check engine light came on, bad transmission, bad engine, etc.
Stopped up fuel filter.
this could be the cause of a bad toque converter
In the immediate effects, yes - alcohol does induce euphoria, then in larger doses it will cause lethargy (sluggish feeling), and so on.
Yes a clogged VENT pipe can cause a sluggish drain
If you have a worn timing chain that hasnt been changed before, that can cause the timing to jump and cause your car to run very rough or not run at all
poor air flow can cause your motor to run sluggish