wow i didn't mean for u guys to start arguing but remember i am only 14 and and do not have that much money and i have tried all the basics or i would not be posting i do know alot about cars and especially z cars i have been raised around mechanics so don't think i would have not tryed all the basics

i just don't have access to testing equipment

Sounds like a suggestion to toss parts at it to me.

Good idea.

Get an extra valve cover and throw it at the engine as hard as you can.

The added 'whack' should whip it into shape. :stupid:

did u try the old stethiscope trick? (spelling?) see if ur injectors are getting a pulse, take a big screwdriver, hold it to the injector base, put ur ear on the handle (not the blade part...) and have someone crank the engine. Listen for a ticking noise, if its not ticking ur injectors probably arent firing, also mentioned earlier see if ur plugs are wet or dry. I know you said you have done the basics but usually by doing the basics u can trace the problem back. If your injectors arent firing then u know ur not gettin power to them and its most likely a problem mentioned earlier, u may have just looked over it. Im pretty familiar with the older 280z injection system due to mine being old, frail and on the verge of crapping out. Also check the fuel injector clips, they get really corroded inside (atleast mine were). I really dont know whats going on with the car since im not there to look at it but i just figured i would throw a couple ideas out there... good luck

thank u zman and kdmatt i already tired that